MABANK – Two persons were killed and two injured in a Van Zandt County accident. The crash happened when car left the road, hit some trees, and ended up in a ditch. Pronounced dead at the scene was Thomas Eugene Bickerstaff Jr., 65, of Duncanville, a front seat passenger. Also killed was a back seat passenger, who was not wearing a seat belt, William Fredrick Sherrard, 39, of Mabank. Injured was the car’s driver, Susan Sherrard, 66, of Mabank, and Lisa May Adair, 39, of Mabank. Adair, who was in the back seat and not wearing a seat belt. She is in a Tyler hospital in serious condition. The driver is in stable condition in a Kaufman hospital. The accident happened just before 4:30 Sunday afternoon on state Highway 198, six miles north of Maybank. The accident remains under investigation.