Denver police are investigating a homicide Saturday morning after an adult male was found dead in a Lincoln Park alley, police tweeted.

The man, who has not been identified, was found around 8:40 a.m. in an alley between 8th and 9th avenues near the 800 block of Navajo Street.

Authorities have yet to determine how the man died, police spokesman Jay Casillas said.

Police do not have anyone in custody, Casillas added. He urged the public to contact Crime Stoppers at 720-913-STOP (7867) with any information.