Lane Garrison is the suspect in and alleged domestic violence incident that went down Saturday night, but when cops arrived to the scene to question him ... he was gone., TMZ has learned.

Law enforcement sources tell TMZ cops responded to Garrison's apartment in Beverly Hills but were unable to locate him when they arrived. 

According to law enforcement sources, cops took a report from the alleged victim and an investigation is ongoing.

This is the second time in less than two months cops have been called because of an alleged domestic dispute involving the former "Prison Break" star. He blamed that incident, an argument with girlfriend Ashley, on a massive misunderstanding.

Maybe we're still riding on the high of that awesome "Gypsy Wedding" catfight we posted ... but this catfight The Situation found himself in the middle of in Beverly Hills yesterday was so clearly staged for the cameras, we almost can't be excited about it. 

But it's still a catfight, so enjoy.

Every reality show on the planet should give up NOW -- because the girls on TLC's "My Big Fat American Gypsy Wedding" just set the record for the wildest, most ruthless catfight of all time ... and it was all caught on tape.

The fight went down last November at a "gypsy" wedding in West Virginia -- the smaller girl (Mellie) hails from the groom's side and the bigger girl (Diamond) was the maid of honor.

Sources tell TMZ, neither side of the family exactly approved of the union -- but Mellie took it one step further after the ceremony ... running her mouth about how the bride and groom don't belong together.

Diamond caught wind of it ... and FLIPPED -- shoving Mellie to the ground outside the church.

At that point, both girls unleashed fist-flying hell -- beating the living crap out of each other and pulling at each other's clothes until they were naked ... literally.

If you watch one clip on the website today ... make it this one. Trust.

"Basketball Wives" star Jennifer Williams is finally fighting back after being slapped in the face by her reality show nemesis Nia Crooks ... with a big, fat, stinging lawsuit.

TMZ broke the story ... Williams filed a police report after the January 21 incident, in which she claims Crooks delivered an "open hand" slap to the left side of her face during a group outing to a race track in Florida.

The incident was caught on tape by the "Basketball Wives" crew and aired last week. During the melee, Crooks threatened Williams right before the attack ... saying, "Do I need to slap you in the face to wake you up?"

Williams replied, "I wish you would." She got her wish.

Williams has now followed up with a civil suit in NY ... going after Nia's ass for assault and battery. In the docs, obtained by TMZ, Jennifer claims she suffered serious injuries in the attack ... as well as "mental shock, mental anguish and psychological trauma”

Williams is demanding Nia fork over a massive check for all of her medical expenses and other damages.

Calls to Crooks have not been returned.

Mark Ballas and his girlfriend got in a 6 minute, alcohol-fueled fight over Mark's unforgivable sin -- smoking a cigarette after promising to quit.

The altercation flared up outside Playhouse nightclub in Hollywood just after midnight Tuesday.  We're told Tiffany Dunn was outraged that Mark had broken a deal they had -- she agreed to sell her scooter after injuring herself in an accident, and in return he agreed to quit smoking.  But one of Tiffany's friends caught Mark inhaling, blabbed to her and fireworks erupted.

Tiffany screams mid-argument, "You're such a d**k when you drink." For his part, Mark tells Tiff, "You can cry me a river for all I care, and you can swim in it."

Mark tells Tiffany, "You punched me in face 3 times today." She responds, "I was dancing."

Tiffany thinks Mark's fibbing about smoking is a gateway lie: "It makes me wonder what else you lie about. Yeah, exactly, exactly, exactly, what else have you lied to me about?"

At one point ... Mark yanks Tiffany's key chain from her, removes his house key and then hands the chain back. She pushes him and he leaves.

We're told Mark and Tiffany were "hammered," but all ended well. They got a cab together and went home.

Young love.

Don't mess with "Texas Women" -- because one of the female star's of the CMT reality show single-handedly took down a MAN with a nasty flurry of punches ... and the brutal street fight was all caught on tape!!!

Sources tell TMZ ... the fight went down February 18th outside some bar in Fort Worth, after a guy called Brooke Jeter the C-word ... rhymes with runt.

Brooke's husband jumped to defend her ... but she didn't need the help ... and beat the guy down with haymaker after haymaker ... it's pretty gnarly.

Cops swooped in ... ripped Brooke off her helpless victim and put Brooke in handcuffs. But she didn't go quietly ... so one of the officers shoved her on to his squad car to calm her down.

We're told the fight will most likely be a plot line on the show, which premieres Saturday.

Yee. Haw.

Paris Hilton left Madeo in the nick of time ... 'cause as she was pulling out of the restaurant in her red Ferrari last night ... a HUGE brawl broke out in the middle of the street ... and it was all captured on tape.

It all started when a valet and a paparazzo (not ours) ... started yelling at each other ... and the valet straight up BITCH SLAPS the pap right in the face.

The pap drops his gear and goes after the valet ... and during the melee, they knock into a man and his date ... who had just finished dining and were waiting at the valet stand.

The male patron flips out ... and unleashes a fists-of-fury style beatdown on the photog ... while his date calmly gets into the waiting car.

After the pap runs out of steam, the patron moves to get into his waiting Mercedes ... but not before yelling out one final taunt.

No word if the patron ever got around to tipping the valet.

TOUGH CROWD on spring break this year -- singer Jeremih took the stage for a special performance in Texas Wednesday night ... and when the crowd realized he was lip-syncing, they BOMBARDED him with drinks ... driving him offstage.

It all went down at Clayton's Bar and Grill on South Padre Island -- sources tell TMZ, the crowd was already pissed because Jeremih was two hours late to the show ... and when they discovered he wasn't even singing, they went off the rails.

Jeremih opened his set by "singing" his song "Down on Me" -- he barely got started before the crowd drowned him out with boo's ... and someone tossed a bottle.

Jeremih powered on -- but then some jackass throws a full drink at the guy, dousing him in a disgusting spring break cocktail, and J calls it quits ... walking offstage.

All in all, we're told the concert barely lasted a few minutes -- and the bar ain't refunding the $30 tickets. Calls to Jeremih's camp were not returned.

Bam Margera got into a full on street fight in Australia this week with an UNDEFEATED PRO BOXER ... and TMZ has learned it was all over a girl.

Sources close to the "Jackass" star tell us ... Bam and a close lady friend were hanging out in Adelaide, Australia ... when the two were confronted by the chick's ex-BF ... who just happens to be an undefeated featherweight boxing phenom.

We're told the two men exchanged words ... and then fists began to fly.  Sources tell us ... Bam "held his own" ... and "didn't get hurt that bad."

We spoke with cops who told us no arrests were made.

Jim Jones is adamant ... he did NOT instruct members of his crew to go into the crowd at a Boston concert and rough up a moronic fan ... even though the fan threw a drink at his head.

Jones was performing at the Middle East nightclub Tuesday night  ... when some idiot in the crowd fired a red solo cup at the rapper ... which sailed right above Jim's head and exploded on a light in the rafters.

Jones stopped the show and tried to identify the culprit ... when several big dudes who were on the stage jumped down into the crowd and tried to confront the cup-tosser in person.

After some pushing and shoving and screaming ... security rushed in and broke it up ... and the cup-thrower was thrown out of the show.

TMZ spoke with Jones ... who tells us, "I would never instruct people to jump down from the stage ... I wish it wouldn't have happened."

Dozens of angry fans transformed into a violent mob at a Young Jeezy concert in Orlando this weekend ... smashing people with chairs, bottles and even a mic stand ... and TMZ has the insane fight footage.

Jeezy was on stage rapping at the BB King Blues Club on Sunday ... when security asked some of the fans to move back from the stage. Sources at the scene tell TMZ ... a bunch of rowdy fans resisted ... and started talkin' smack to the security personnel.

Tensions grew ... until someone in the crowd fired a drink at the stage ... and that's when the place went nuts. Suddenly, everyone started fighting and throwing things ... including a mic stand.

Jeezy went on the loudspeaker and tried to calm everyone down ... but the crowd refused to yield ... so Jeezy and his entourage decided to exit through the back before someone got hurt.

Eventually, the violence died down. It's unclear if anyone suffered any major injuries in the ruckus.

Sources close to Jeezy tell us the rapper was "very upset" with the venue ... because he felt they should have done a better job controlling the crowd.

We called the venue for comment -- but so far, radio silence.