A man is facing charges after he stormed a school bus, police said.

Police said Keith Bartholomew of Allentown initially yelled at kids through the bus windows and then boarded the bus to continue yelling at the students.

The incident happened around 3:40 p.m. August 30 after one of the kindergarten and first grade students allegedly gave Bartholomew the middle finger, police said.

When the bus stopped at Pennsylvania Avenue at Ulster Road in Hanover Twp., Lehigh County, Bartholomew boarded the bus to yell loudly, police said.

The bus driver, Nicole Tucker of Coopersburg, stood up and blocked Bartholomew from coming any further onto the bus and told him to get off the bus.

According to state police, Bartholomew eventually got off the bus but continued to yell at the students from outside as the bus drove away.

Bartholomew is charged with unauthorized school bus entry and disorderly conduct.