Altona North Embona Taskforce detectives have arrested a man following a number of armed robberies in Maribyrnong and Braybrook.

Investigators have charged the 34-year-old Maidstone man over four armed robberies committed on service stations in Maidstone and Maribyrnong, a Maidstone pharmacy and a restaurant in Braybrook.

It is alleged that the robberies were committed over a two month period, commencing at the end of September with the last robbery committed on 27 November.

On each occasion the man was allegedly armed with a firearm and threatened staff before fleeing with an amount of cash.

He has been charged with four counts of armed robbery and four offences against the bail act.

He is expected to appear at the Melbourne Magistrates’ Court later this morning.