The mother of a 16-year-old Iranian girl on Friday disputed official claims that her daughter fell to her death from a high building, saying the teen was killed by blows to the head as part of the crackdown on anti-hijab protests roiling the country. Nasreen Shakarami also said authorities kept her daughter Nika’s death a secret for nine days and then snatched the body from a morgue to bury her in a remote area, against the family’s wishes. The bereaved mother spoke in a video message Thursday to US funded Persian-language Radio Farda. Nika Shakarami has become the latest icon of the protests,…