HOUSTON -

METRO police are hoping some newly released surveillance video will help them catch the man who assaulted at least two passengers on the rail train platform at Main Street near Preston in downtown Houston last week. 

The video shows the man walk up to one passenger, who had just gotten off the train, and punch him the face. The other victim was getting onto the train when the man attacked. 

Police said both of the assaults were unprovoked.

METRO police officers are asking anyone with information to contact them or call Crimestoppers at 713-222-TIPS.