Sick thug harassed police and warned them: "Soon people will die. When it's all over the news, when you see my name, it'll all make sense"

A twisted thug claimed the killing of 16 children was "a waste of a mass shooting" and boasted of gaining a "sense of sexual pleasure" from his fantasies of extreme violence. Jack Mason peppered police officers with abuse and harassment after developing a grudge following an arrest.

He warned Merseyside's Chief Constable Serena Kennedy that he had a gun and would "cut her face off", while in a disturbing email, he said: "Soon people will die. When it's all over the news, when you see my name, it'll all make sense."

Mason adopted a pseudonym inspired by a killer who murdered police officers as he cooked up a chilling "recipe" for "tasting blood", the Liverpool Echo reports. Liverpool Crown Court heard yesterday (January 14) that Mason was previously detained by the force for "obstructing a drug search and resisting arrest" back in 2021.

The 31-year-old, of Grasmere Avenue in St Helens, then went on to bombard the arresting officer with a string of threatening phone calls over the space of around two weeks, telling him on one occasion: "I'll just f***ing blow your head off, you little d***head."

Nardeen Nemat, prosecuting, described how this led to him being convicted of harassment and issued with a restraining order which banned him from contacting the PC until June 2022. The officer in question later left Merseyside Police, with his collar number thereafter being given to a student PC.

Mason then began contacting this officer on February 7 last year under the name "Harry Roberts", a moniker which was said to have been inspired by a criminal who murdered three police officers in London in the 1960s and who he had watched a documentary on. In his emails, he initially claimed to have "evidence to give" in relation to a