Dozens of people were killed in airstrikes on the rebel-held enclave of Eastern Ghouta in Syria on Tuesday as the United Nations called for an immediate humanitarian ceasefire in the country. The Syrian Observatory for Human Rights said Tuesday’s bombardment of Eastern Ghouta had killed 63 people. A local official, Khalil Aybour, put the toll at 53. On Monday, air strikes killed 30 people in Eastern Ghouta, the Observatory said. “Today there is no safe area at all. This is a key point people should know: there is no safe space,” Siraj Mahmoud, the head of the Civil Defense rescue service in opposition-held rural Damascus, told Reuters. “Right now, we have people under rubble, the targeting is ongoing, warplanes on residential neighborhoods.” Insurgent shelling of regime-held Damascus killed three people, the Observatory and Syrian state media reported. Airstrikes also killed at least six people in rebel-held Idlib including five in Tarmala village, the Observatory said. UN officials in Syria called for fighting to stop to enable aid deliveries and the evacuation of sick and wounded, listing seven areas of concern including northern Syria’s Kurdish-led Afrin region, being targeted by a Turkish offensive. “For the last two months we have not had a single (aid-delivery) convoy. This is really outrageous,” said Panos Moumtzis, assistant UN secretary general and regional humanitarian coordinator for the Syria Crisis. There were air raids on towns across Eastern Ghouta including Douma, where an entire building fell, a witness said. The UN representatives noted that Eastern Ghouta had not received inter-agency aid since November. “Meanwhile, fighting and retaliatory shelling from all parties are impacting civilians in this region and Damascus, causing scores of deaths and injuries,” said their statement, released before the latest casualty tolls emerged on Tuesday. Separately, UN war crimes experts said they were investigating several reports of bombs allegedly containing chlorine gas being used against civilians in the rebel-held towns of Saraqeb in the northwestern province of Idlib and Douma in the Eastern Ghouta. The Syrian regime denies using chemical weapons. Paulo Pinheiro, head of the International Commission of Inquiry on Syria, said the regime siege of Eastern Ghouta featured “the international crimes of indiscriminate bombardment and deliberate starvation of the civilian population”. Reports of air strikes hitting at least three hospitals in the past 48 hours “make a mockery of so-called “de-escalation zones”, Pinheiro said, referring to a Russian-led truce deal for rebel-held territory, which has failed to stop fighting there. “There is a misperception that the de-escalation areas have resulted in peace and stability... if anything, these have been serious escalation areas,” said Moumtzis. France’s Foreign Ministry said it was concerned by the reports of chlorine used on civilians in Syria, but it was too soon to confirm them. French President Emmanuel Macron said last May that “any use of chemical weapons would result in reprisals and an immediate riposte, at least where France is concerned”.