UPDATE: 

Pittsburgh Police arrested Dorion Knight, 19, and Daniel Scott, 24, of Pittsburgh in connection with this incident.

Knight is charged with three counts of carrying a firearm without a license and three counts of recklessly endangering another person. Scott is charged with carrying a firearm without a license.

Original post:

Pittsburgh Police from Zone 5 responded to two ShotSpotter alerts for multiple shots fired in the parking lot of the YWCA in the 6900 block of Frankstown Avenue just before 3:30 p.m.

Responding officers found shell casings at the scene, but they did not locate any victims or property damage.

Zone officers will be increasing directed patrols in the area while they conduct their investigation.

The investigation is ongoing.