Cops went back to the Beverly Hills apartment of Lane Garrison this afternoon -- and this time the former "Prison Break" star was there ... so they arrested him on suspicion of domestic violence.
As TMZ first reported, cops responded to a domestic violence call at Garrison's apartment yesterday ... but he was gone by the time they arrived. According to our sources, the alleged victim was Garrison's ex-girlfriend, Ashley Mattingly.
Law enforcement sources tell TMZ the alleged victim called cops today when Garrison returned to the apartment. We're told cops arrived and arrested Garrison without incident.
He's currently being held on $50,000 bail.