At least two gunmen fired into a Philadelphia city bus with assault rifles after a woman on board allegedly asked them to shoot at a passenger who criticized her for hitting her child.

Dramatic video obtained by MyFoxPhilly.com shows men with high-powered rifles firing into a Septa bus last month.

Prosecutors allege that Penny Chapman, who was riding the bus with her young son, became upset after a passenger sitting behind her criticized her for spanking the boy.

Chapman then made a phone call directing brothers, Karon and Raheen Patterson, to fire at the passenger when the bus arrived at her stop, prosecutors say.

Video taken from inside the bus shows other passengers, including a mother and her 4-year-old son, running for cover as bullets fly through the windows, MyFoxPhilly.com reports. It also shows an elderly woman who appears confused. The 80-year-old is seen dropping to the floor of the bus just moments before a bullet flies overhead.

"You see her very clearly because she doesn't actually see what's going on. She's sort of left standing in the middle of the bus as everyone has sort of separated all the way to the front or all the way as far as they could go to the back,” Morgan Model Vedejs, assistant District Attorney, told the station.

Four people, including the two brothers and the child's uncle, Angel Lecourt, will head to trial on Aug. 26, according to the station.

The bus was carrying 10 to 15 passengers at the time of the alleged shooting.

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