Tucson police homicide detectives are asking witnesses of a fatal shooting New Year's Day to come forth with information.

The victim of the early morning shooting on Monday, Jan. 1, was identified as 31-year-old Manuel Valenzuela, said Sgt. Pete Dugan, a Tucson Police Department spokesman.

Detectives learned that there were multiple people present when the shooting occurred and investigators are asking that anyone with information call 911 or 88-CRIME, said Dugan on Thursday, Jan. 4.   

Officers responded to reports of multiple shots fired in the 100 block of West Bilby Road, between South 12th Avenue and South Nogales Highway, just after 4 a.m. Jan. 1, said Dugan.

When officers arrived, they found Valenzuela lying in the roadway with gunshot wounds. He was pronounced dead at the scene, Dugan said. 

Homicide detectives determined that Valenzuela was in the neighborhood with his brother at the time and that his brother was not injured during the shooting. 

The brother was interviewed but detectives have not released further details. No arrests have been made.