Central Goldfields Crime Investigation Unit detectives are investigating after thieves broke into separate businesses in Castlemaine and Maryborough yesterday, September 17.

Investigators have been told two males wearing gloves and hoodies forced their way into a supermarket on Barker Street, Castlemaine about 3.20am.

They attempted to steal cash and cigarettes but fled the store empty-handed after activating the security alarms.

Shortly after, about 4.45am, the same men are believed to have broken into a camping store on High Street, Maryborough.

While inside they stole a till containing cash along with a generator, again fleeing after setting off the alarm.

It is believed the men were travelling in a four-door Holden Astra hatchback, possibly dark blue or black in colour. Police have now released a photo of the vehicle believed to be involved.

Anyone with information is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report online at www.crimestoppersvic.com.au