FAYETTEVILLE — Two men accused of throwing rocks off a Cumberland County highway overpass and critically injuring a driver now face additional charges.

The Cumberland County Sheriff's Office arrested Todd Farmer, 24, of Fayetteville and Anthony Wayne Raynor, 21, of Hope Mills in December.

Investigators say that on March 15 the two men dropped rocks onto traffic from an overpass along Interstate 95.

Atractor trailer and a sport utility vehiclewere hit.

The suspects now face an additional charge of attempted murder for hitting the tractor trailer.

Nathaniel Calloway was behind the wheel when the rock came crashing through his truck. He was not hurt, but the truck was badly damaged.

Calloway's tractor trailer was behind the SUV driven byMichael Vytlingam.

Vytlingam was blinded when the 27-pound rock crashed through his vehicle. The 18-year-old was struck in the head and nearly killed. He suffered critical head injuries, lost his left eye and has suffered extensive nerve damage to his right eye.

Farmer and Raynor are charged with assault with a deadly weapon with intent to kill, attempted second-degree murder and conspiracy for that attack.

Bail in the case is now set at $1 million.