ROCHESTER, Minn. (KIMT) - Rochester Police say a four to five car crash was caused by a medical emergency. RPD says a driver suffered an epileptic seizure. The crash started at 41st Street and went all the way to 31st Street, roughly 10 blocks. As of 3:40 p.m. on Monday, Rochester Police had issued a partial road closure near 41st St. NW and Marketplace Dr. NW. There was a major traffic backup in the area at the time of the crash.