The mother of a teenage girl who died during protests in Iran has accused authorities of murdering her daughter.
In a video sent to US-funded Radio Farda, Nasrin Shakarami said she had seen injuries on her daughter’s body which contradicted an official statement.
Authorities say Nika Shakarami, 16, appears to have been thrown from a building by workmen.
Meanwhile, an official forensic report has said a woman whose death sparked the protests died from ill health.
The family of Mahsa Amini, a 22-year-old Iranian Kurd, say she died due to being beaten by the morality police.
She was detained on 13 September in Tehran for allegedly breaking the strict law requiring women to cover their hair with a hijab or headscarf.
The police denied mistreating her and said she suffered a heart attack.
On Friday, Iran’s Forensic Medicine Organisation (FMO) issued a statement saying that tests showed Ms Amini died from multiple organ failure caused by cerebral hypoxia and not from being hit.
It said an underlying brain and heart condition brought this on. Ms Amini’s family has previously insisted she was medically fit.
Rights groups say more than 150 people have been killed and thousands arrested since the protests began on 17 September.
Nika Shakarami’s death has become one of the highest-profile cases of young people killed in the protests. She went missing in Tehran on 20 September after telling a friend police were chasing her.
Nasrin Shakarami said Nika’s aunt made a statement on TV on Wednesday in which she said her niece “was killed falling from a building” and had been “forced… to make these confessions”.
The authorities “have called others, my uncles, others, saying that if Nika’s mother does not come forward and say the things we want, basically confess to the scenario that we want and have created, then we will do this and that, and threatened me,” Nasrin said.
Nika’s uncle was also seen on TV speaking against the unrest, as a voice belonging to someone off-screen was picked up whispering to him: “Say it, you scumbag!”
Officials say that on the night she disappeared, Nika went into a building where eight construction workers were present and that she was found dead in the yard the following day.
Tehran judiciary official Mohammad Shahriari was cited by state media as saying on Wednesday that a post-mortem examination showed Nika suffered “multiple fractures… in the pelvis, head, upper and lower limbs, arms and legs, which indicate that the person was thrown from a height”.
However, Nasrin Shakarami said that was not true.
“I saw my daughter’s body myself… the back of her head showed she had suffered a severe blow as her skull had caved in. That’s how she was killed.”
She said a forensic report found she had been killed on the day she joined the protests by a blunt force trauma to her head.
A death certificate issued by a cemetery in Tehran, which BBC Persian obtained, states that Nika died after suffering “multiple injuries caused by blows with a hard object.”