AN investigation is still under way into the fatal road collision in which a pensioner died and his son was seriously injured.
Four lorries and six cars were involved in the crash, which occurred at around 12.30pm. The carriageway was shut for most of the day as a result.
A 79-year-old man from Ilford, a driver of a silver Renault Clio, was pronounced dead at the scene.
His son, a 58-year-old passenger also from Ilford, is currently in a stable condition at the Royal London Hospital in Whitechapel, east London.
A 47-year-old woman from Basildon is also in stable at the Royal London. She was the driver of a black Mercedes.
A 58-year-old man from Germany is currently being questioned by officers at Basildon police station after having been arrested on suspicion of causing death by dangerous driving.
A 43-year-old Polish lorry driver who had also been arrested at the scene and later released without charge is now being treated as a witness.
The clockwise carriageway was fully reopened at 9pm later that Tuesday.
Anyone with information should contact the Serious Collision Investigation Unit on 101 or email collisionappeal@essex.pnn.police.uk.
