The Islamic Republic of Iran is currently facing its boldest challenge since its establishment in 1979, with protests sweeping across the country. The demonstrations erupted a month ago over the death of 22-year-old Mahsa Amini in police custody, detained for allegedly breaking rules on headscarves. Iran's Human Rights Activists News Agency (HRANA) estimates 222 people have been killed in or after the widespread demonstrations. The authorities' strict control of information and independent reporting makes the number and identities of those killed hard to verify. BBC News has used a variety of investigative techniques to name a total of 40 men, women and children who have died - many shot. Nika Shakarmi, 16, (pictured) is one of them. She went missing in Tehran, on 20 September, after telling a friend police officers were chasing her. A death certificate obtained by BBC Persian states she died after "multiple injuries caused by blows with a hard object”. Click the link in bio to find out more about the victims. Photo credit: BBC Persian source #Iran #MahsaAmini #IranProtests