9:35 a.m. Update
The crash scene has been cleared but motorists are asked to watch for people in the area investigating.
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Traffic was slowed Wednesday morning on Interstate 90 near Hardin due to a rollover crash.
The Montana Department of Transportation reported at 8:20 a.m. the crash was blocking one lane of traffic between mile markers 498 and 499, about two miles east of Hardin.
A helicopter was expected to land at the scene and motorists should be prepared for a short delay.
The Montana Highway Patrol reports on its website the crash in the westbound lanes involves injury and was reported just after 8 a.m.
This is a developing story. Check back for updates.
