Teen assaults Perth boy riding bike

AAP

A boy riding his bike in Perth has been stopped and assaulted by an older teenager, police say.

The boy was riding on Gascoyne Way near Hourglass Reserve in Cooloongup about 5.30pm on Thursday when the teenager committed an indecent act and assaulted the boy, police said.

The teenager is described as being dark-skinned, about 16 and was wearing a black shirt and riding a black bike.