Irans government has ignored repeated requests from senior prison officials for help in containing the coronavirus in the countrys overcrowded jails, Amnesty International said Friday. Amnesty said it reviewed copies of four letters to the health ministry signed by officials at Irans Prisons Organization, "raising the alarm over serious shortages of protective equipment, disinfectant products, and essential medical devices.” The ministry "failed to respond, and Irans prisons remain catastrophically unequipped for outbreaks," the London-based rights group said in a statement. Iran has been battling to contain the Middle Easts deadliest novel coronavirus outbreak since announcing its first cases on February 19. Authorities have confirmed over 16,000 deaths from the COVID-19 illness. Amnesty said the head of the health care office at the Prisons Organization had first submitted a letter to the health ministry requesting help on February 29, before follow-up letters were sent on March 25, May 12, June 14 and July 5. The March letter had requested disinfectant products and protective equipment to last three months, including one million liters of surface disinfectant and 5.4 million masks, AFP quoted Amnesty as saying. "These official letters provide damning evidence of the governments appalling failure to protect prisoners," said Diana Eltahawy, Amnesty Internationals deputy regional director for the Middle East and North Africa. Amnesty said the letters "stand in stark contrast" to public statements by the advisor to the head of the judiciary, Asghar Jahangir, who has lauded Irans "exemplary" initiatives to protect prisoners from the pandemic. The rights group said it had "received distressing reports of prisoners displaying COVID-19 symptoms being neglected for days, even when they have pre-existing heart and lung problems, diabetes or asthma." "When their conditions worsen, many are merely quarantined in a separate section in the prison or placed in solitary confinement, without access to adequate health care," the rights group alleged. Since March, more than 100,000 detainees in Iran have been granted temporary release or sentence remissions to help limit infections in prisons. But a UN group of experts said this month that released inmates were now being returned to prison, despite a second wave of the virus in the country. "We once again call on Iranian authorities to urgently address overcrowding in prisons, including by immediately and unconditionally releasing all those detained for the peaceful exercise of their rights," Amnestys Eltahawy said.