Dallas police are investigating after a 19-year-old man was shot and killed early Sunday morning.

According to the Dallas Police Department, officers were called to the shooting at about 4:56 a.m. in the 700 block of Fabrication Street.

Police say preliminary investigation found the victim, 19-year-old Adrian Martinez, had been shot in the chest. He was taken to a local hospital, where he died.

The suspected shooter is unknown as of Sunday afternoon, police said. No arrests have been made.

The investigation is ongoing.

This is a developing story, please check back for updates.