Girl sexually assaulted at Cable Beach

A 15-year-old girl has been sexually assaulted at Western Australia's popular Cable Beach.

Police said the victim left her house in Broome at 5am on Monday and walked towards Cable Beach, where she noticed a man sitting on a bench with a bicycle nearby.

When she returned from the beach, she noticed the bicycle had been moved to some bushes and a man then grabbed her from behind, dragged her into the bushes and sexually assaulted her.

The man is described as dark skinned, about 30 years old, short with a solid build, and was wearing a grey singlet and black shorts with white stripes on the side.