The two biggest hospitals in Syria’s Aleppo are now out of service after they were hit by airstrikes on Wednesday, The Guardian reported. Local medical workers said the two hospitals – codenamed M2 and M10 to hide their locations – were hit at around 4 am and 10 am. The World Health Organisation later confirmed that the two had been knocked out of service, according to Reuters. However, it was unclear if the airstrikes were carried out by Syrian or Russian aircraft.

“The warplane flew over us and directly started dropping its missiles. Rubble fell in on the patients in the intensive care unit,” a radiologist at the M10 hospital said. Other workers at the hospital said its oxygen and power generators had been destroyed, even as patients were moved to a nearby facility. There were no immediate reports of casualties because of the strikes.

There are only 30 doctors remaining in Aleppo, where an estimated 2,50,000 civilians remain trapped as troops loyal to Syrian president Bashar al-Assad fight rebel forces for control of the city. Medical officials have accused the Assad regime of carrying out the “extermination of a major city by starving and killing its 85,000 children using all modern and middle age weaponries”.

Fighting between the two sides has intensified after a September 9 ceasefire between the pro-Assad and rebel camps was called off last week after an aid convoy was bombed in north Aleppo. More than 3,00,000 people have died in the six-year-long civil war, and nearly half the country’s population forced to flee since it began. While the United States supports rebel groups, Moscow is seen as a key Assad ally.