Last week we reported that Lil Twist was a suspect in the beating and pantsing of Zoey 101 star Chris Massey, which went down in the apartment of Massey's brother, rapper and actor Kyle Massey.

Massey was admitted to the hospital after the incident and now we know why. According to an arrest warrant issued yesterday for Lil Twist, the Young Money rapper and four of his crew broke into Kyle's apartment last Friday and stole his wallet and cellphone. Twist had been ejected from the apartment earlier in the day after an argument. When Chris got in the way, he was pummeled with brass knuckles. (And also apparently depantsed.)

The arrest warrant is for home invasion and robbery, according to the Massey brother's attorney. The DA has yet to confirm the charges.

The LAPD are trying to identify the other four men who were with Lil Twist. For his part, Twist has been telling friends he didn't use any weapons in the incident.