OMAHA, Neb. (AP) — Authorities have identified a man who was pronounced dead at a hospital after being found on the steps of a southeast Omaha house.

Police say a woman walking her dog spotted the man and alerted officers around 2:15 a.m. Thursday. Paramedics sent to the scene performed CPR on the man before he was placed in an ambulance. He'd suffered a stab wound. Police say he was pronounced dead at Nebraska Medical Center.

Police identified him as 51-year-old Troy Giles. A homicide investigation has been launched. No arrests have been reported.