Boxing star Gervonta Davis is the subject of a police investigation after an alleged physical altercation with police, TMZ Sports has learned.
Davis -- Floyd Mayweather's top protege -- was at an upscale mall in Virginia on February 17 when he got into it with another man at an ATM machine.
One witness tells us ... Davis began shouting at the man and cops were called to the scene. When officers arrived, we're told Gervonta acted hostile toward the cops.
One person we spoke with says he watched Gervonta shove one of the officers while screaming obscenities while his friends were desperately trying to restrain him.