Key points:- France says seven of its citizens have been detained in Iran- MI5 says Iran's intelligence services have tried at least 10 times to kidnap or kill people in the United Kingdom- Security forces have reportedly shot at commuters at a Tehran metro stationTehran is accusing Western adversaries of stoking the nationwide unrest that was ignited when 22-year-old Iranian Kurdish woman Mahsa Amini died in the custody of morality police on September 16 after they arrested her for allegedly flouting the Islamic dress code.Robert Malley — the US special envoy to Iran — said in Paris that it was time for countries to coordinate their response to citizens being detained in Iran for the purpose of "hostage taking as bargaining chips and for political reasons".Another verified video showed members of the security forces, including plain-clothes officers, attacking women without hijab headscarves on an underground train.State media said "rioters" — a term Iranian officials use to describe protesters — killed two members of the Revolutionary Guards and a member of its Basij paramilitary force on Tuesday.One Guard was shot dead in Bukan, a city in Ms Amini's home province of Kurdistan, and another was gunned down in Kamyaran, a Kurdish majority city in West Azerbaijan province, the official IRNA news agency reported."