The report said authorities were investigating and gave no indication of a motive, although the wife had complained about a knife threat on social media in recent weeks. While unclear if it was a random crime, the murders are likely to fuel suspicions over the involvement of the authorities, coming in the wake of a deadly crackdown against opponents of the Tehran regime. Mehrjui had been a long-time critic of state censorship and last year angrily protested against a government decision to ban his latest film.