A MAN who stabbed a Tottenham teenager who was trying to defend his girlfriend has been found guilty of manslaughter.

Alphonse Kruizinga, 34, of no fixed abode, had punched Marcin Bilaszewksi's girlfriend in the face following a row on a bus as it pulled into Finsbury Park last May.

The 19-year-old, of Hillside Road, south London, was in large group of friends who were followed by Kruizinga on a bus from Stamford Hill as they made their way to a birthday party.

He began throwing insults at the group and began goading them to fight him following an earlier dispute with some of Marcin's friends.

When they arrived in Finsbury Park, Kruizinga continued to harass and threaten them, prompting Marcin's girlfriend to try to stop him and was attacked.

Marcin intervened to defend her, but Kruizinga had a kitchen knife hidden in is his sleeve stabbed him in the back.

He was arrested two days later and was found with two knives up each sleeve.

Kruizinga will be sentenced on Friday 15 April.