Sigala died after he was taken to a hospital following a shooting at a party on Glendale Drive early Sunday morning.
The main suspect in the case, Phillip Lucero, turned himself into SLCPD authorities the next day.
Investigators believe Jorge Alfredo Tapia could give them some answers about what happened during the incident.
Police say Tapia is hispanic, 5'6" tall, has brown eyes and black short hair.
Anyone who knows of Tapia's whereabouts was asked to call the SLC Police Dept.