Police in Johnstown have a man in custody after a late night armed robbery at a local gas station.

Police say James Mack walked into the APlus Mart and Sunoco gas station on Fairfield Avenue with a BB gun and demanded money.

It happened around 11 pm Tuesday night.

Police say hours later, Mack came back and used a ‘bait bill’ to pay for items at the mini-mart.  Police were alerted and arrested him at a home on Hattie Avenue. 

During police interviews Mack confessed.

Mack is scheduled to be arraigned Wednesday.