ALBUQUERQUE – An Albuquerque man who claimed to shoot his uncle in self-defense is facing a murder charge.

Albuquerque police upgraded charges against 25-year-old Joshua Martinez after the victim died from his injuries early Wednesday.

Authorities say Martinez called 911 Tuesday to report the shooting, saying 48-year-old Curtis Martinez tried to run him over with his car.

Responding officers found Curtis Martinez slumped in his car with a gunshot wound to the head. He was immediately transported to a hospital.

Meanwhile, a handgun was seen in a holster worn by the suspect. Joshua Martinez was handcuffed without incident.

Investigators say surveillance footage shows the suspect was never in any danger. They did not indicate what motivated the shooting

Joshua Martinez will remain in custody while a criminal complaint against him gets amended. It was not immediately known Wednesday if he had retained an attorney.