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This photo provided by the Virginia State Police shows the scene following a 75-vehicle pileup on Interstate 77 near the Virginia-North Carolina border in Galax, Va., on Sunday, March 31, 2013. Virginia State Police say three people have been killed and more than 20 are injured and traffic is backed up about 8 miles. (AP Photo/Virginia State Police, Sgt. Mike Conroy)

Three killed in highway pileup

A series of chain-reaction wrecks involving nearly 100

vehicles along a mountainous, foggy stretch of Interstate 77 near the Virginia-North Carolina border, killed

three people and injured 25 others on March 31.