It all started just before 10 a.m. Tuesday along the 6300 block of Callowhill Street with a report of shots fired.
When officers responded, they spotted two men running away. Another person was barricaded inside a home.
But police soon discovered it was actually a 19-year-old with a gunshot wound to the shoulder inside that home.
The teen was taken to the hospital where he's recovering.
The two men seen running away were caught a short time later hiding on a roof.
Police say they also found a gun and drugs on the roof.