MOBILE phones, navigational systems and digital cameras have been stolen from a Pakenham business.
Police said the value of the stolen goods was estimated at between $50,000 and $60,000.
But much of the haul could be worthless as the thieves did not take phone cards and other parts necessary for their operation.
Thieves broke into the business, which police said did not want to be identified, in the early hours of Monday morning.
Pakenham CIU Detective Sergeant Phil Jury said it appeared the burglars had forced entry into the business through the roof.
The break-in set off an alarm, but the thieves fled.
Det Sgt Jury warned residents to be very wary of anybody offering mobile phones or other items for sale.
“A lot of the property may be useless and stops have been put on the phones,” he said.
“We urge anybody who is offered a cheap phone or other technology to contact police.”
Detectives are continuing to investigate.
Anybody with information should contact Pakenham Police on 5945 2500.