THE BRONX - Police have arrested the man allegedly behind a city bus assault in the Bronx. 

According to authorities, 20-year-old Dennis Buie boarded a Bx36 bus and began arguing with its 53-year-old driver before punching him in the face. 

It happened near Bryant Avenue and East 175th Street on Jan. 13. 

Buie is now facing assault and harassment charges.