updated 06/09/2014 AT 11:00 AM ET
•originally published 06/09/2014 AT 11:45 AM ET
Kevin Roper of Jonesboro, Georgia, was behind the wheel of a Walmart truck early Saturday, when police say he caused a six-vehicle pileup on the New Jersey Turnpike.
In a criminal complaint obtained by PEOPLE on Monday, New Jersey State Police say Roper, 35, drove “without having slept for a period in excess of 24 hours.”
Roper now faces charges including vehicular homicide, auto assault and reckless driving. He is expected in court on Wednesday.
In a statement Saturday, Walmart president and CEO Bill Simon said that “if it’s determined that our truck caused the accident, Walmart will take full responsibility,” adding that road safety is “our absolute highest priority.”