Car overturns in Long Beach, trapping and seriously injuring 1 person

Police say a car overturned in Long Beach, trapping one person inside.
Fire officials say it happened around 5 a.m. on West Walnut Street.
Police say they were able to remove the unidentified person through the removable roof of the car.
The victim was seriously injured and taken to a hospital for treatment.
There is still no word on what caused the car to overturn.