The family of a teenage boy murdered in front of commuters at a busy railway station say they are "beyond heartbroken".
Louis Johnson's grandfather and brother Omar paid tribute to the 16-year-old in a statement issued through police on Wednesday.
The teenager was stabbed to death in a violent attack that lasted 40 seconds on Monday afternoon.
British Transport Police said Mr Johnson came into East Croydon station at around 4.30pm through the Ruskin Square ticket barrier, and was attacked minutes later.
While he was on the overbridge in the station he met someone who immediately pulled out a knife and stabbed him.
A 16-year-old boy has been arrested over the murder.