Police are beefing up patrols in the city’s south-west after a petrol station was stormed by an armed robber for the second time in a few days.

Police have returned to the Metro petrol station on Punchbowl Road after it was robbed a second time within a week. During last night’s armed robbery, approximately $1,500 in cash and some cigarettes were stolen. “It may be the same offender. It may be a copycat” – NSW Detective Inspector Andrew MacKay, Crime Manager, Campsie Police Area Command.