Investigation underway into deadly crash that killed 1, injured 4 people

One person is dead and four others injured after the van they were riding in was crushed along I-20 in southeast Oak Cliff.  Investigators say around 5:30 a.m. Sunday a van pulling a U-Haul trailer drifted onto the shoulder and slammed into the back of a stopped 18-wheeler truck. The truck driver was not hurt. Police believe the driver of the van possibly fell asleep.