Transcript for At least 2 dead after truck explodes on interstate: Authorities
another scene late this afternoon, a deadly collision and explosion on I-35. A major highway north of Dallas. Multiple vehicles involved, including an 18-wheeler, carrying propane tanks. Here's Marcus Moore from Texas. Reporter: Tonight, this massive inferno erupting on a major highway in north Texas. An 18-wheeler carrying tanks, exploding. You can hear the sound of propane escaping the ruptured tanks. The fire department confirming three people killed and at least three others hurt. The crash involving two 18-wheelers and four vehicles. Thick black smoke billowing into the sky as emergency crews scramble to contain the out of control fire. Firefighters on the scene in Denton spraying down the charred cab of a truck. Some of the tanks seen scattered across the highway. And you can see a burned-out car next to the truck. The multivehicle crash shutting down interstate 35 in both directions for hours, leaving miles of traffic. Tonight, investigators are trying to figure out what caused some lanes have been reopened, but traffic is still a major issue. And authorities tell us that speed is something they're looking into. Marcus, thank you. Major news in the
This transcript has been automatically generated and may not be 100% accurate.