© (Tim Pulliam/ABC11 via AP) In this photo provided by ABC11, an Alamance County Sheriff Dept. officer directs traffic near exit 154 on Interstate 40 after multiple vehicle accidents Sunday, March 13, 2016, in central North Carolina. Authorities say dozens of vehicles were involved in a series of wrecks that injured over a dozen people and temporarily shut down part of Interstate 40. BURLINGTON, N.C. (AP) — Authorities say dozens of vehicles were involved in a series of wrecks that injured 20 people and temporarily shut down part of Interstate 40 in central North Carolina.

North Carolina Highway Patrol spokesman Jordan Pack tells The News & Observer of Raleigh more than 100 vehicles were involved in the crashes Sunday evening in Alamance County.

Pack says there were 20 minor injuries but no fatalities. He says it's not clear what caused the first pileup.

© (Tim Pulliam/ABC11 via AP) This photo provided by ABC11 shows traffic backing up on westbound Interstate 40 from the view of Exit 154 after multiple vehicle accidents Sunday, March 13, 2016, in central North Carolina. Authorities say dozens of vehicles were involved in a series of wrecks that injured over a dozen people and temporarily shut down part of Interstate 40.

Authorities told WRAL-TV the wet roadway may have been a factor in many accidents and rubbernecking could have caused several others.

The North Carolina Department of Transportation says I-40 West/I-85 South closed because of the crash and reopened around 11:15 p.m.