Iran’s main rebel opposition group said the sister of its leader, Massoud Rajavi, has been executed after being tortured in an Iranian prison. The Tehran regime had no immediate comment on the allegation. In a statement sent to the Associated Press in Nicosia, Cyprus, the Moujahedeen organization said Monireh Rajavi was arrested with her husband, Asghar Nazemi, in 1982. The group said he was executed in 1985 and that his wife was tortured for several years before being executed at age 38. The statement said the couple’s only offense was that the woman was the sister of Rajavi.