A crash involving a minivan shut down southbound Interstate 270 in Clarksburg, Maryland, for just over 3 1/2 hours early Friday.
Because of the crash, traffic was diverted to Md. 109 in Hyattstown.
Montgomery County Fire & Rescue spokesman Pete Piringer tweeted that someone was ejected from the minivan.
A total of four people, including several children, were taken to the hospital after the 2:50 a.m. crash, he said.
The highway reopened around 6:32 a.m.
Maryland State Police are investigating what happened.
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