Thought sounded like gunshots in the 2,000 block of justin street. Officers saw men on dirt bikes taking off in different directions. They cut in front of all those cars and he shot down this way. Reporter you mean like driving . Yeah he drove really fast and he came down allegheny avenue. Reporter one man was corned by police at third and allegheny. Another man was stopped at front and gurny street. You see his bike laying in the middle of the street. Officers did not fire any shots and they did not find any guns. Its just stuff that shouldnt be happening. Yet its happening every single day. Reporter another dirt bike was found on fifth and erie streets but it was abandoned. Investigators say that one man being questioned said his dirt bike backfired which would explain the sound that officers heard. Investigators also say that four officers involved in this are also being questioned. They never actually laid eyes on a shooter. Reporting live in center city. Nbc10 news. And more break