A woman and a child are dead after a single car accident and another child is in critical condition.

It happened on westbound Interstate 80 near the Madison Avenue exit.  Witnesses say that the woman driving a Nissan Pathfinder was being chased by a Toyota Camry before the SUV drove off the roadway and crashed into a tree.

It's reportedly related to a chase that started when an off duty officer in said Toyota Camry saw the woman in the Pathfinder speeding and driving erratically. That chase came to an end when that SUV drove off the road and slammed into a tree. The woman driving the vehicle was killed.  A child that was in a car seat was also killed. An older child was taken to the hospital and is in critical condition. 

The crash caused three lanes of the freeway to be closed for almost three hours.