Kyle Yule, 17, was attacked with knives in Gillingham by rival gang members Five teenagers have been given prison sentences of between 16 and 24 years for stabbing a 17-year-old boy to death as part of a gang turf war in Kent. A number of tit-for-tat attacks between teenagers in Medway towns unfolded over the course of some months last year, Maidstone crown court heard.