Firefighters who tackled a car fire at Swinton on Tuesday night said it was probably started delibrately. The silver Vauxhall car was found ablaze in a car park off Station Road at 10.50pm.
Motorists in the Dearne are being urged to step up their security following a spate of overnight break-ins for valuables left on display.
Coats, bags, mobile phones and satellite navigation systems are among the items thieves are looking for, according to South Yorkshire Police.
Anyone with information about those responsible should call the Police on 101, or crimestoppers on 0800 555111.