UPDATE (11/3/13): Two months after the August incident, Marcus T. Paulk has officially been charged with domestic violence and battery. According to TMZ, he could face up to four years in jail. His girlfriend (at the time) admitted to TMZ that she also threw some punches, but she's the one who ended up in the hospital.

Original story (8/22/13):

Brandy’s little brother is in the headlines again, but this time it’s her fictional family making us concerned. Marcus T. Paulk, who played singer Brandy Norwood’s little brother Myles on UPN’s Moesha, was arrested after turning himself in to authorities for putting his girlfriend in the hospital.

Sources say that Marcus allegedly got in a physical fight with Andi Roxx, a singer who is (was?) dating Marcus. The two were apparently at a Beverly Hills nightclub when they got into a verbal argument “because she wasn’t paying him enough attention.”

Andi reported to TMZ that when they got home, the fight escalated. Marcus punched her in the chin, she punched him back and busted his lip, and then he punched and kicked her in the stomach before telling her to pack her bags and get out.

But it wasn’t until the next morning when Andi felt like she had internal injuries and decided to go to the hospital. When police found out about the incident, they contacted Marcus’s attorney, with the actor later turning himself in.

Marcus, who is 26 years old, is currently being booked by police. TMZ’s attempts to reach the actor’s reps were not returned.

Source: TMZ