A crash involving three transport trucks is snarling traffic on the 401 Wednesday.
It was just after 11 a.m. when OPP say three transports crashed on the 401 eastbound near Woodstock.
Police have since closed all eastbound lanes between Foldens Line and Sweaburg Road.
Detours are in place with the closure expected to last until 4 or 5 p.m. Wednesday. OPP say westbound lanes are open, but moving slowly.
One of the drivers suffered minor injuries in the crash.
More information to come.