Police are investigating the theft of a car and jet-ski from Semaphore yesterday.

Sometime between 4.30pm – 6pm, a white Toyota Hilux ute was parked in Percy Street, with a black-and-yellow Seadoo jet-ski on an attached trailer.

When the owner returned to where he had parked his car, he found both the car and jet-ski were missing.

The car, jet-ski and trailer all have South Australian registration plates. The Hilux is S515AVB, the trailer is S961TCB and the jet-ski is DT272S.

Anyone who knows the whereabouts of the three items is asked to call Crime Stoppers on 1800 333 000, or online at www.sa.crimestoppers.com.au