Jul 18, 2014 21:51 State Police: Medical condition suspected in fatal Geismar crash State Police: Medical condition suspected in fatal Geismar crash Advocate Staff Reports July 18, 2014 Comments GEISMAR — A medical condition is suspected as the cause of a fatal car accident Thursday, when a driver went off La. 621 and died in a one-car crash, authorities said. State Police Trooper 1st Class Jared Sandifer said State Police doesn’t release identifying information in accident cases when a medical condition is involved. The accident happened just before 4 p.m. Thursday on La. 621 near La. 73 in Geismar. Traffic was closed in both directions for a short time on La. 621 east of La. 73.