A Clay County accident occurred on I-35 and resulted in injuries for three Clay County residents.  According to the Highway Patrol, the accident occurred as an unknown vehicle, not involved in the crash, cut off a vehicle driven by Lisa Howes, 48, of Holt.  This caused Howes to leave the right side of the road.  She overcorrected, briefly returned to the roadway, and then struck another northbound vehicle driven by Robert Birkeness, 46, of Excelsior Springs.  Howes, and one of her passengers, Bobby Ogden, 23, of Holt, received minor injuries. Another passenger, Madeleine Howes, 22, of Holt, sustained moderate injuries.  All three were taken to Liberty Hospital for treatment of their injuries.