ESSEX Police were called to Hedley Avenue, Grays at around 5.40am this morning (Thursday December 3) to reports that a number of people had been seen leaving a lorry.
Officers and the police helicopter attended to search for the people.
Police received a further report at 8.50am this morning of people leaving a lorry in London Road, Grays.
Officers have arrested 23 people in total on suspicion of being illegal immigrants, who will be handed over to Border Force.
One of the lorry drivers, a 40-year-old man, was arrested on suspicion of immigration offences and has been taken to Grays Police Station for questioning.