The U.S. Marshals Task Force and Atlanta police have arrested a second man in the killing of a former boxing champion Thursday, Channel 2 Action News reported.

Authorities arrested Quantavis Robinson on Addington Street at 3:21 p.m. in the killing of O’Neil “Supernova” Bell in southwest Atlanta.

On Dec. 3, Atlanta police announced the arrest another man in the robbery and murder case, crediting tips from the public.

Bell, a retired cruiserweight champ, and another man were shot after getting off a MARTA bus in southwest Atlanta on Nov. 25. Bell died at the scene, and the other victim was treated at a hospital.

Detectives arrested Tycorion Davis, 18, last week.

Davis is also a suspect in robberies in Clayton County and East Point.