BROOKFIELD -- 'Serious injuries' have been reported after a truck rear-ended a semi on I-43 northbound near Moorland Rd., the Waukesha County Sheriff's Department says.
It happened around 12:30 p.m. Tuesday. There are serious injuries in the crash.
DOT cameras showed emergency personnel responding to a scene involving at least one semi truck and two smaller vehicles.
The closure is expected to last at least two hours as investigators work to discover what happened.
Check back often for updates on this developing story.