Police are asking for your help determining what caused a fatal accident that closed US 127 for hours on Wednesday morning. Two 19 year olds were riding in a SUV that crossed from the southbound lanes and rolled over into the northbound side. Zachary Clark of Laingsburg was killed and his passenger, Logan Winn, seriously injured. The accident happened around 6:30 a.m. on Wednesday. The accident happened in the middle of a construction zone along southbound US 127.