One person is dead and three people are in critical condition after their car rolled over Saturday afternoon.
North Haven Fire Department responded to a car rollover on Interstate 91 southbound just past the exit 11 on ramp. The accident temporarily closed the southbound highway between exits 10-13.
When crews arrived, they found the SUV went over the guardrail and down the embankment. Four people had been ejected from the car. One person self extricated out of the car.
Paramedics pronounced an unknown occupant dead at the scene.
Three occupants were transported in critical condition to Yale New Haven Hospital. The other person was transported to Yale for evaluation.
Connecticut State Police Major Accident division is investigating the cause of the crash.