Police are investigating after two vehicles were set on fire in Morphett Vale overnight.

Just after 3.30am Saturday 5 July, police and fire crews were called to Archer Road following reports that two cars were on fire in the front yard of a home. Firefighters extinguished both fires which caused significant internal damage to the Nissan Ute and Volkswagen SUV.

Initial investigations into the incident suggest that the fires are suspicious and Crime Scene investigators will attend the scene to examine the vehicles today.

Anyone with information or CCTV is asked to contact police. You can anonymously provide information to Crime Stoppers online at https://crimestopperssa.com.au or free call 1800 333 000.