A collision on a highway in Italy caused an extraordinary blast that killed at least two people and left at least 70 others injured. It happened near the city of Bologna. Police say a tanker truck carrying liquefied petroleum gas was involved in a traffic accident. The initial collision caused a fire, but shortly after the entire truck exploded, sending flames across all lanes of the highway and into the air. InsideEdition.com's Mara Montalbano (https://twitter.com/MaraMontalbano) has more.