An aircraft landing at the St. Louis Downtown Airport in Cahokia early Tuesday evening went off the edge of the runway.

St. Louis Downtown Airport Fire Chief Mike Mavrogeorge said a light experimental aircraft with one occupant, the pilot, experienced "some sort of failure," which caused the aircraft to go off the edge of the runway into a grassy area about 5:30 p.m. Tuesday.

Mavrogeorge said the pilot had no injuries, and the aircraft has been recovered. The investigation into the incident is ongoing.

Cahokia and Sauget fire departments were initially requested to assist the St. Louis Downtown Airport Fire Department. However, the request for mutual aid was canceled once it was determined the aircraft crash wasn't as serious as anticipated. MedStar EMS was also canceled in route to the airport.