Taxi cab drive Juan Molina pays his respects at a make-shift memorial for pot shop murder victim Travis Mason at the Green Heart marijuana dispensary on June 20, 2016 in Aurora. (Helen H. Richardson, The Denver Post)

Reward for killers of slain pot shop security guard now $30,000

Pot shop murder: Travis Mason was killed on June 19 when two men tried to rob the Green Heart marijuana dispensary

The reward money has been increased for providing information tied to the people who killed a security guard during a robbery attempt at the Green Heart marijuana dispensary June 19, Aurora police said. It’s now $30,000.

Travis Mason, 24, died of a gunshot wound to the head when two men tried to rob the Green Heart at 19005 E. Quincy Ave.

Denver Metro Crime Stoppers has increased the reward for information leading to arrest and conviction by $10,000, police said in a release. Previously Crime Stoppers had offered $2,000.

The U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives has offered up to $5,000 for information. Another $5,000, which includes $3,000 donated by Euflora, a neighboring dispensary, would come from the Aurora police reward fund. Shortline Automotive Group donated $8,000.

Mason began working at the dispensary two weeks before he died, and he was preparing to start a second job as a security guard in the evenings at a King Soopers store.

He was scheduled to test for a job with the Denver Police Department in July.

Mason spent four years in the Marine Corps and was stationed in North Carolina, where he met his wife, Samantha.

The couple have 4-year-old twins and a 1-year-old boy. The family moved to Colorado after Mason recently was honorably discharged.

Anyone with information should contact agent Matthew Ingui with the major crimes/homicide unit at 303-739-6067. Tipsters also can call Metro Denver Crime Stoppers at 720-913-7867.

This story was first published on DenverPost.com