VISTA, CA – A man accused of shooting his girlfriend in the head at their Vista apartment complex pleaded not guilty Monday to a murder charge.

Estevan Montelongo, 41, was ordered held without bail. He faces 110 years to life if convicted in the death of 28-year-old Michelle Hashtani.

Montelongo allegedly opened fire on Hashtani with a pistol at their apartment complex in the 600 block of Ascot Drive on July 22. Sheriff's deputies found the victim gravely injured in a pool area about 3 p.m.