A security guard who worked at a pharmacy in Hollywood has been charged with killing a man he suspected of shoplifting, the Los Angeles County District Attorney’s Office announced.

Donald Vincent Ciota II, 28, of Covina, faces one count of murder with a special allegation that he used a firearm as a deadly and dangerous weapon.

On Dec. 2, Ciota confronted Jonathan Hart, 21, inside a Walgreens pharmacy near Sunset Boulevard and Vine Street, and a physical altercation ensued, prosecutors said. Ciota pulled out his firearm and is alleged to have fatally shot Hart in the back as he ran away, prosecutors added.

Bail is scheduled at $3 million. If convicted, the defendant faces a possible maximum sentence of 50 years to life in state prison. The case remains under investigation by the Los Angeles Police Department.