Pittsburgh police arrested four protestors and are searching for the driver of a car that drove through the crowd late Friday night, as hundreds took to the streets to protest the shooting death of unarmed black teen Antwon Rose .
According to KDKA, hundreds of protesters blocked streets and chanted for justice for the third night in a row, as tensions continue to rise over the killing by a police officer who had just been sworn in hours before shooting the fleeing Rose in in the back.
During the protest a a black sedan drove through the crowd and was chased by bystanders, but no injuries were reported.
The 17-year-old Rose was shot by the officer three times on Tuesday as he attempted to flee during a stop.
Police investigators are still pouring over evidence in the shooting while activists have called for homicide charges to filed against the police officer.