A lone male robbed a woman at knifepoint at the Lacombe Mohawk gas station on Tuesday night.
The incident happened at 6:20 p.m.
Lacombe Police Service reports that an undisclosed amount of cash was taken.
Police are now looking for the suspect, who they believe is still in Central Alberta.
Steven Lee Pinch, 31, is described as Caucasian, 1.83 metres tall (six feet), about 85 kg (185 pounds), with blond hair and blue eyes.
Police say he is armed and dangerous.
Anyone with information is asked to call Lacombe Police Service at 403-782-3279 or Crime Stoppers at 1-800-222-TIPS (8477).