A teenager has been jailed for eight years after he sprayed acid over a group of friends, leaving some with permanent scarring.
Alexander Bassey, 17, launched the unprovoked attack on the five victims as they waited on a train platform at Ockendon rail station in Essex on May 22.
As a train pulled into the station, Bassey gestured towards the friends and encouraged them to join him on the train.
When the group refused, Bassey approached them, shouting abuse before spraying them with a highly corrosive industrial strength drain cleaner.
British Transport Police released CCTV footage of the attack on YouTube.
Bassey, of Maplestead Road, Barking, admitted three charges of causing grievous bodily harm and two charges of attempted grievous bodily harm at a hearing.
He was jailed for eight years at Basildon Crown Court on Friday.
Three of the victims received permanent scarring, with one left with potentially life-changing eye injuries.
Senior investigating officer Detective Sergeant Gail McKemmie said: "This was a vicious and cowardly attack carried out without a single ounce of care.
"Bassey had no apparent motive for the attack and showed absolutely no remorse when questioned by police."