It took just over an hour after the horrific knife attack on two British Jewish people in Golders Green, north London, for an Iran-linked terror group, Harakat Ashab al-Yamin al-Islamia (HAYI), to make a claim of responsibility on a Telegram channel. Counter-terror police are aware of the initial posting – a brief statement accompanied by the group’s logo – put online at 12.23pm and a follow-up 40 minutes later showing a violent attack at a bus stop. However, as inquiries continue, the police are also aware that the 45-year-old man arrested in the street on suspicion of attempted murder has “a history of serious violence and mental health issues”, according to Met chief Mark Rowley. Investigators add there is no initial evidence of Iranian state direction for the Golders Green attacks and that therefore the statements made by HAYI on social media are most likely to be opportunistic.…