Man airlifted to Royal Perth Hospital in rescue helicopter after mountain biking accident in Perth hills

A man believed to be in his 30s is in a critical condition in hospital following a mountain bike incident in the Perth hills.

It is believed the man was out riding on Mundaring Weir Road in Hacketts Gully this afternoon when he was seriously hurt.

The RAC Rescue helicopter was dispatched and transported the injured man to Royal Perth Hospital, landing at RPH at 2pm this afternoon.

A spokeswoman told The West Australian he arrived in a critical condition.

More to come.