Las Vegas PD: "O.J. Is in Custody ... "

Las Vegas Metropolitan Police began a press conference just after 3:50 PM PT and formally announced the arrest of O.J. Simpson in connection with a gunpoint robbery on Thursday night.

Vegas police announced that they are holding Simpson on multiple charges.

Capt. James Dillon said that three search warrants were prepared and evidence collected, including two firearms and property reported stolen, and clothing worn by suspects.

After review, they arrested O.J. Simpson. Robbery detectives took O.J. into custody without incident. He invoked his rights to an attorney and was transported to the detention center. Robbery with a deadly weapon, two counts. Assault with a deadly weapon, two counts. Conspiracy to commit burglary, and burglary with a firearm.

O.J. will be transported and booked at Clark County Detention Center, where bail will be determined based on the charges. The investigation is "dynamic and ongoing."

The location where the search warrants were served is being kept secret.

Lt. Clint Nichols said the investigation is open and active. He would not confirm that O.J. was armed, despite the charges. He would not discuss the firearms.

Nichols said there was a social relationship between O.J. and the other parties involved. O.J.'s alleged accomplice, Walter Alexander, is out on bail.

People are still being sought in connection with the incident and may be Las Vegas residents.

Nichols said that he didn't believe anyone was "roughed up," but said that firearms were involved in the robbery. Nichols said that the issue of the ownership of the property is still being sorted out, but said that property not thought to belong to O.J. was also taken.

"We have not recovered all of the property," said Nichols, "it was an extensive list of sports memorabilia, most signed by Simpson and some Joe Montana items and baseballs."