can be sentenced to death.

The police chief in Tanzania's main city of Dar es Salaam disputed Mwangi's account and told the BBC they were "opinions" and "hearsay" coming from activists."If they were here, I would engage them, I would ask them what are they saying, what do they mean... In law, those things are called hearsay or hearsay evidence," Jumanne Muliro told the BBC.

He said Mwangi should make a report to the authorities for investigation.Tanzanian President Samia Suluhu Hassan's government has been accused by rights groups of becoming increasingly repressive in the run-up to October's presidential and parliamentary elections.Regional rights groups have called for an investigation, and Amnesty International said Tanzanian authorities should hold to account those responsible for the "inhuman" treatment.

Mwangi said he was held by Tanzanian authorities for several days along with Ugandan activist Agather Atuhaire, who had earlier also spokenShe attended the press conference in Nairobi on Monday, where Mwangi described his sexual assault in graphic detail.

He said his torturers would sexually assault him and tell him to say "asante" (thank you in the Swahili language) to their president.

Mwangi added that the officers told him they were filming everything and would leak the footage if he spoke about what he had gone through."I don't think you'd be human if you weren't affected by the cases that came in," she added.

"At home, yes, I do see trauma, but it's not on the same level that I see here, where it's pretty much every day."Ms Blackman added that in al-Mawasi she was treating patients who had experienced significant weight loss.

"There's evident malnutrition in children, so we do our best to get them on a targeted food programme."But it's also just trying to giving people some dignity while they are receiving the care here."