Colorado Springs police are investigating a shooting that left one person in critical condition early Sunday, according to an online blotter entry.

Officers were dispatched to the incident in the 3700 block of Astrozon Boulevard just before 4 a.m. Sunday, when they found a male suffering from at least one gunshot wound walked into the emergency room at a local hospital.

Because of the seriousness of his injuries, the victim was not able to give details about the shooting. The investigation is ongoing, police said.