The killer, who did not know Tomasz and lived in a different part of Tyneside, said he took a serrated steak knife out with him on the spur of the moment on 3 October.
'If you carry a knife, you're weak'
He had gone to the Springwell area to meet a 14-year-old girl and had been walking her home through Whitehills Nature Park when she alerted him to a group of youths following them.