- Summary- Cleric's death could stir sectarian tensions- Iranian rights lawyers criticise clerical leaders- Protracted protests seeks fall of Islamic RepublicDUBAI, Nov 3 (Reuters) - A cleric at a Shi'ite Muslim mosque in the restive, mostly Sunni Muslim Iranian city of Zahedan has been shot dead, the official news agency IRNA said, threatening a spike in sectarian tensions complicating government efforts to contain widespread unrest.Videos shared on social media show that a crowd of hundreds gathered on Thursday in a central avenue of the city of Karaj to pay respects to Hadis Najafi, a young woman who was shot dead by security forces, according to her sister and social media.Protesters in Karaj, which lies just west of the capital Tehran, were seen in an online video burning and ripping up a brown "abah", the long robe that Shi'ite clerics wear.A member of the hardline Basij militia was killed in Karaj and five police officers were wounded during a riot, the semi-official Tasnim news agency reported.“Iran’s vicious security apparatus is using every tactic in its book, including lethal force against protesters, arresting and slandering human rights defenders and journalists, and sham trials to crush widespread dissent,” said Tara Sepehri Far, senior Iran researcher at Human Rights Watch."