The A82 has been closed in both directions following a serious crash.
The incident, involving two vehicles, occurred near Loch Lomond around 12.25.
Emergency services were called to the scene of a crash, between Luss and Inverbeg, and have closed the road northbound and southbound, between the A811 at Balloch and Tarbet.
Police remain at the scene and a lengthy diversion is in place, as detailed below.
— BEAR NW Trunk Roads (@NWTrunkRoads) June 2, 2016
— Traffic Scotland (@trafficscotland) June 2, 2016