Three males -- two of them juveniles -- are accused of firing a shotgun in the 1200 block of Chew Street in Allentown Tuesday night.
An Allentown police officer heard the shots around 7:20 p.m. and saw the three suspects running away.
The officer chased the three and took them into custody without a struggle on a roof in the 200 block of 12th Street.
After searching the area, police found a sawed off shotgun.
William Perry, 19, of Allentown was charged with possession of a small amount of marijuana. Other charges are pending.
Police did not release the ages of the juveniles or if they were charged.
Property damage is undetermined and the case is still under investigation.