Toronto police are hoping security camera images can help them find a man who attacked and robbed a woman near a west end bank machine.

Police said a man, armed with a knife and a bottle of aerosol repellent, entered an ATM vestibule near Roncesvalles and Fern avenues around 10:40 p.m. last Thursday.

A 43-year-old woman who was using the bank was attacked, police said. Police didn't say if the woman was injured during the incident.

During the robbery, police said, a purple bandana stretched over the man's mouth was knocked free, allowing a clearer look at him as he fled.

It's unclear how much money, if any, he escaped with.

Police believe the man is 25- to 35-years-old and said he stands around 5-9 with a medium to large build.

Anyone with information about the incident is asked to contact police directly or Crime Stoppers anonymously. 

Toronto police ATM robbery suspect

Police said the assailant was armed with a knife and a bottle of aerosol repellent. (Toronto Police Service)