39 dead were discovered in a truck outside London

According to the information, one of the dead should be a boy in his teens.

- This is a tragic incident where many people have lost their lives. Our investigation is ongoing to determine what has happened, Superintendent Andrew Mariner tells Echo.

Police suspect the truck was coming from Bulgaria and entered the UK on Saturday 19 October.

- We have arrested the truck driver in connection with the incident, which will be in police custody as our investigation continues, says Andrew Mariner.

This article will be updated.