WINSTON-SALEM, N.C. - A hospital spokesperson said a fifth person involved in Friday's three-vehicle wreck on Interstate 77 has died.

Bryan Mowry, 59, of Hickory, was pronounced dead Saturday morning at Wake Forest University Baptist Medical Center, hospital officials and the N.C. Highway Patrol said.

Mowry, 59, was one of two people in a Toyota Tacoma pickup truck that was hit head-on by a Toyota Sienna minivan that crossed the median around 9 a.m. Friday. The other person, 57-year-old Sandra Mowry, remained in critical condition Saturday evening at Baptist Hospital.

A couple and two of their five children died Friday in the crash. Wayne Hicks, 44, his 38-year-old wife Natalie Hicks, and two of their children: Wayne Hicks Jr., 9, and 2-year-old Natalya Hicks, were killed. The couple's three other children -- Elijah Hicks, 9; John Hicks, 6; and Josiah Hicks, 4 -- were injured in the crash and remain at Baptist Hospital. Their conditions are unknown.

Bonnie Casstevens Weddle, 50, was also injured in the crash. She was driving a Nissan Altima north on the highway when she was hit by the minivan head-on. Weddle was taken to Hugh Chatham Memorial Hospital in Elkin with non-life-threatening injuries. She was treated and released in stable condition.

"I saw the back end of a van pull onto the interstate," said Martha Turman, who witnessed the crash. "The truck hit the van and the momentum carried them into a car on the right-hand side."

"I saw debris come out the back of the van and saw a tire and balls of smoke and fire," she said. "I later realized the debris was a child that had been ejected out the back of the van on impact."

Capt. Everett Clendenin, a spokesman for the Highway Patrol, said troopers believe Wayne Hicks fell asleep while driving the minivan. The Highway Patrol said one of the children in the van said he saw his father fall asleep. The accident is still under investigation, said First Sgt. Justin Dodson with the Highway Patrol.

The Hicks family was traveling from their home in Queens, N.Y., to a family reunion in Alabama.