IPSO guidelines:
12. Discrimination
i) The press must avoid prejudicial or pejorative reference to an individual's, race, colour, religion, sex, gender identity, sexual orientation or to any physical or mental illness or disability.
ii) Details of an individual's race, colour, religion, gender identity, sexual orientation, physical or mental illness or disability must be avoided unless genuinely relevant to the story.
So despite the fact that this violent individual is behaving in a very male way, the media is not allowed to report their sex as a fact?
I'd argue it's genuinely relevant to the story