ESSEX Police are investigating following a collision in Grays which has left one person with potentially life-threatening injuries.
They were called to reports of a collision in Brentwood Road at around 5.45pm today (Tuesday 28 January).
A light blue Mazda 3TS and a blue Ford Focus were in collision.
One person in the Focus has sustained potentially life-threatening injuries.
Two people other people believed to have been in the Focus have been arrested on suspicion of dangerous driving and have been taken to hospital for treatment.
The driver of the Mazda has also been taken to hospital.
The road is expected to be closed for the next few hours while officers investigate the circumstances surrounding the collision.
They need anyone who saw what happened, has any CCTV or dash cam footage, or has any other information to call on 101 quoting incident 897 of 28 January or Crimestoppers anonymously on 0800 555 111.