According to this Daily Mail story (by way of The Escapist), the leader of the Scottish Police are blaming Gears of War for a vicious knife attack. While the crime does have its roots in playing the game online - where the victim and the accused first got to know each other, the chairman of the Scottish Police Federation thinks playing the game in and of itself was somehow a catalyst for the crime.
The crime happened in April of this year in Clydebank, Scotland: an unnamed 13-year-old male slashed the throat of a 14-year-old male, cutting him deeply enough to expose his windpipe, according to police. This, police say, was the result of an earlier falling out between the two teens online while playing the game. Prior to that falling out, the boys met each other online in-game and hit if off in late 2011. Later on the two would meet in person. But as 2012 rolled on something happened between the two boys and they were no longer friends...
"The reporting officer was of the opinion that the violent videogames played online by the accused may have been a factor in his conduct," Andrew Brown, the prosecutor in the case told the court.
Brian Docherty, the chairman of the Scottish Police Federation, told the court that "these games are rated 18 and shouldn't be played by children of this young age - but online gaming may be outside their parents' knowledge. We need to look again at what we can do to stop this."
While Microsoft a rep expressed sympathy for the victim and his family, the company pointed out that the Xbox 360 has parental control features in place to keep age inappropriate gaming and entertainment away from those who shouldn't be using it - for example 13 and 14-year-old boys.