UPDATE @ 11:45 a.m.: OPP say both vehicles have been cleared from the scene and all lanes are open.
More details to be released.
Emergency crews are on the scene of a serious collision north of Tweed.
Just before 10:30 a.m, police, fire and ambulance members were called to Highway #37 and Highway #7 for a two vehicle collision.
Few details are known, however three injuries are estimated.
More details are expected later today.
