PLANO, Texas (CBSDFW.COM) – A 64-year-old man has died after he was run over by his own pickup truck at his home in Plano late Tuesday evening, police said.

The incident happened at around 10:30 p.m. at a home in the 2300 block of Williams Way near Park Boulevard.

Police on scene said the man was leaving to get medicine for his wife. For an unknown reason, the man got out of his pickup and then started walking away when he saw that the vehicle began backing up.

According to police, the man tried to get back into the pickup but he slipped and fell, which led to the vehicle running over his head and killing him. Police do not know if the vehicle was left in reverse or if there was some sort of mechanical issue.

The man’s identity has not yet been released as police continue to investigate.