Nazareth police responded to reports of shots fired shortly after 10 p.m. Saturday in the area of S. Spruce and E. Evergreen streets.
Police, however, are asking for the public's help in locating any victims.
Two individuals were taken into custody, but they were not charged, according to Police Chief Thomas Trachta.
Blood was found in the area, Trachta said, but there has been no other sign of a victim -- or victims.
Trachta asks anyone who may have information or may have been in the area to call (610) 759-9575 or (610) 759-2200.