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GRAND RAPIDS (WZZM)-Grand Rapids police are investigating a rollover crash that seriously injured a Lowell man.

The crash happened justbefore 7 p.m. Saturday on the northbound U.S. 131 exit to Franklin Street. Emergency crews had to a freethe 66 year oldwho was pinned underneath an SUV. He was taken to a nearby hospital. He is in critical condition with head and internal injuries

Police closed the off ramp for more than four hours to investigate the crash. It has since reopened.