Cops released surveillance video Thursday of a man wanted for sexually assaulting a 12-year-old girl in Manhattan this week.

The bearded assailant grabbed the girl’s buttocks as he walked past her on W. 28th Street near 10th Avenue around 4:30 p.m. on Tuesday, cops said.

The victim screamed and then ran off. When she got home she told her mother about the incident and her mom called 911.

Police say the suspect, who is in his early 20’s, was last seen wearing a brown jacket with a black scarf and dark green pants.