SAN ANTONIO -

San Antonio police have released the names of the men involved in a deadly shooting on the city's southeast side.

Police said 19-year-old Joshua Orcasitas (pictured) fatally shot his 43-year-old uncle, Roger Hernandez, in the head just after 7 p.m. on Wednesday in the 1200 block of Schley Avenue.

A witness told police Hernandez had been drinking and became violent. That witness said Hernandez started punching Orcasitas when he tried to calm him down and tried to choke his nephew.

That's when Orcasitas pulled out a 9 mm handgun and shot him in the head, police said.

Police recovered the weapon and arrested Orcasitas a couple blocks away.

Orcasitas has been charged with murder.