A deadly crash involving a motorcyclist shuts down a portion of the northbound Loop-101, at the Indian School Road exit, Friday morning.  Bart Graves with DPS says, it started with a minor rear-end collision involving two cars.  As that slowed down traffic, Graves says, the motorcyclist sped up, weaving in and out of traffic to get around the slow down.

Graves says speed was a factor as the motorcyclist was going too fast to stop in time to avoid the first crash. He was not wearing a helmet. The crash brought traffic to a standstill for at least two hours.