Southern Metro Region Crime Team detectives are investigating an aggravated burglary at Langwarrin last week.
Three men forced entry to a Warrandyte Road home about 2.30am on Thursday 7 July.
The trio have stolen the keys to three cars at the home, however only two were taken.
The two vehicles, a white 2012 Holden Cruze with registration 1CV5BM and a white VL Holden Commodore sedan with registration 68324H on heritage plates, were stolen and left the property in different directions.
The family sleeping inside were not distributed by the thieves and discovered the cars stolen in the morning.
All three men were partially masked and wearing gloves.
One of the men is wearing a Quiksilver hooded jumper and a second is wearing jeans and thongs.
Police have released images of three men they believe can assist with their enquiries.
Anyone with any information is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential crime report at www.crimestoppersvic.com.au
