SA cops raid houses to find Vic escapee

Victorian juvenile jail escapee Lachlan Mitchell has evaded police for a third day, with South Australian police raiding six houses to no avail.

Mitchell, 20, fled the Malmsbury Youth Justice Centre on Tuesday and got into a black ute waiting for him with South Australian number plates.

The car is believed to have been involved in a violent carjacking on Thursday where two men held up a driver at gunpoint in Mount Gambier and stole his car.

The car was later found dumped in the same suburb.

Police on Friday continued their search for the two men, raiding six houses in and around Mount Gambier.

They seized three firearms, ammunition and a quantity of dried cannabis and cannabis plants but didn't find the two men.

They now say Mitchell and his accomplice have fled Mount Gambier.

They have advised people to not approach the men as they may be armed.

Mitchell is serving a 12-month sentence for serious driving and firearm offences.

SA police are continuing to follow "active lines of inquiry" and are liaising with Victoria Police.