Metropolitan Police
Ahmed Hassan in disguise on a train.
On September 16, 2017, Ahmed Hassan was arrested by police officers in Dover, in southern England.
Less than 24 hours before, a bomb had partially detonated on the London Underground, injuring 30 people.It had been Hassan who planted the bomb - and he was apprehended as he was waiting to board a ferry to flee the country.
On Friday, the 18-year-old was found guilty of attempted murder.
In the aftermath of the verdict, the Metropolitan Police released a video explaining his attempts to evade capture in the aftermath of the attack, from destroying his SIM card to a series of disguises - and how investigators managed to track him down anyway.
Here's what he tried, and how the police managed to find him: