ACT Policing is seeking witnesses after an aggravated robbery at the 7-Eleven Service Station in Fyshwick occurred early this morning (Wednesday, January 8).

Around 3.30am, a man entered the service station on Canberra Avenue, armed with a large screwdriver and threatened an employee making demands for cash.

The employee handed over a sum of cash and then locked the doors of the store preventing the man from leaving.

At this time, a dark green Mazda 121 has reversed into the front doors of the store causing enough damage to allow the man to escape.  The man got into the Mazda 121 and fled the area.

The Mazda 121 used in the aggravated robbery was stolen from an apartment complex in Lyons earlier in the night.