Two people were killed and at least three others injured when a speeding motorcycle and minivan collided with another vehicle early Sunday morning at an intersection in Fullerton, authorities said.

The crash happened around 9:20 a.m. at Magnolia Street and Flower Avenue, Fullerton police said.

A pedestrian, an unidentified 70-year-old woman, was struck by one of the vehicles and died at the scene, police said. The motorcyclist, an unidentified 35-year-old man, was transported to a local hospital, where he died of his injuries.

One of the vehicles also struck a telephone pole and the side of a house, causing a gas leak that forced the temporary evacuation of nearby homes, authorities said.

The motorcyclist and a person in an Audi sedan were driving north on Magnolia Street at high speeds when they collided with the minivan, which was trying to turn onto Flower Avenue, authorities said. The motorcyclist was thrown, while the Audi, after striking the front of the minivan, skidded off the road, striking the woman on the sidewalk and a male cyclist.

The driver of the minivan and a passenger, as well as the cyclist, suffered moderate to minor injuries, police said.

Investigators do not believe alcohol or drugs were a factor in the crash.