Former Newcastle United striker has been charged with common assault following an alleged incident at an entertainment complex.
Police were called to the scene at a car park at The Gate in the North-East city following reports of an argument between two people.
"At 7.09pm yesterday evening police received a report of a fight in the car park area at The Gate, Newcastle," Sky News quotes a Northumbria Police spokesman as saying.
"A 21-year-old has been arrested on suspicion of assault and he is currently in custody helping police with inquiries."
The frontman left the Magpies by mutual consent a fortnight ago.