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ST. LOUIS COUNTY, Mo. – A low-speed chase backed up traffic for miles along northbound I-170 in St. Louis County Wednesday night.

Police said the chase started near I-64 and Grand, and it ended near I-170 and St. Charles Rock Road around 9:15 p.m. The suspect then got out of the vehicle and ran away.

It’s unclear what led up to the chase, which lasted for more than 90 minutes. Police have not released any further details.

FOX 2 will continue to update this story as more information becomes available.