Police have closed part of the A59 near Clitheroe following an accident involving two motorbikes.
The A59 is closed between the junction at top of Whalley Road and the junction at Pimlico Link Road, Clitheroe.
Eye witnesses reported the collision at around 1 pm close to the Pendle Road junction.
It appears the bikers were travelling in the direction of Skipton when the accident happened.
Police officers are at the scene and it appears the air ambulance was called as eyewitnesses reported one of the bikers lying injured on the floor.
It is believed a Landrover Discovery was also involved in the accident.