Stolen bike: Green and black Kawasaki Ninja 1GF893 was taken from Park St in Collie.
Collie police are urging motorcyclists to lock up their bikes after three have been stolen in less than a week.
The latest was a green and black Kawasaki Ninja, registration plate 1GF893, taken from Park Street in Collie last weekend.
Collie police senior sergeant Mike Dean believes the bike is still in Collie.
"The owner is a young man and still paying it off so please contact Collie Police if you see the motorbike," Snr sgt Dean said.