A British teenager was sentenced to 17 years in prison on Thursday for murdering a man just hours after posting a message on social networking website Facebook that he felt "like killin some1".

Leon Craig Ramsden, 19, was found guilty by Manchester Crown Court in northwest England of stabbing 31-year-old Paul Gilligan at a bar in Bolton last July, after consuming alcohol and cocaine.

Gilligan, who lived with his partner and three children, died about an hour after suffering stab wounds to his shoulder and chest.