A truck driver blamed for a deadly Kansas crash has pleaded guilty to two counts of vehicular homicide as his trial was set to begin.

Scott Wegrzyn was charged for the deaths of a Salina woman and her baby. Investigators say both were killed when Wegrzyn fell asleep at the wheel and crashed into their car in May 2005.

Amanda Hieronymus and her 11-month-old son died when the Nebraska man's semi-truck crossed the median and slammed into their SUV head on, just south of Salina.

According to the Kansas Highway Patrol report, the driver told conflicting statements, at first saying he choked on a piece of pizza and then later said it was a loaf of bread.

The report also noted that the trucks gradual approach in to the median is consistent with fatigued drivers who have fallen asleep.

Witnesses testify at earlier hearings that Wegrzyn knew for years he suffered from a medical condition which causes drowsiness. A private investigator found the driver had been diagnosed with sleep apnea and not only wasn't taking his medication but lied about his medical condition to get his license.

Sentencing has been set for October 12 at 2pm.