Damascus, US-led coalition air strikes have killed dozens of civilians in the Syrian city of Raqqa over the past 24 hours, activists and state media say.
The Syrian Observatory for Human Rights reported that 42 had died in attacks on areas held by so-called Islamic State.
Anti-IS group Raqqa is Being Slaughtered Silently said 32 were killed in one district alone.
There was no immediate comment from the coalition, which is supporting Kurdish-led fighters seeking to capture Raqqa.
The Syrian Democratic Forces (SDF) alliance launched a ground assault in early June and is now believed to hold more than half of the city, which is the de facto capital of the “caliphate” proclaimed by IS in 2014.
The figures took to 167 the number of civilians killed in coalition strikes since 14 August, it said.
“The tolls are high because the air strikes are hitting neighbourhoods in the city centre that are densely packed with civilians,” Syrian Observatory director Rami Abdul Rahman told AFP news agency.
“There are buildings full of civilians that are trying to get away from the front lines.”
The coalition has not yet responded to the report, but said it had conducted 20 air strikes in the Raqqa area on Monday, engaging 13 IS tactical units and destroying 24 fighting positions, a vehicle, a logistics node and communications infrastructure.
At the start of June, the coalition said its 22,983 air strikes in Syria and Iraq since 2014 had unintentionally killed at least 624 civilians. However, human rights groups believe the true figure is far higher.
Airwars, an organisation that tracks allegations of civilian deaths, said that as of 8 August, coalition air strikes were likely to have killed at least 4,487 civilians in three years.
On Monday, UN spokesman Stéphane Dujarric told reporters that it was deeply concerned for the safety of up to 25,000 civilians trapped inside Raqqa, many of them women and children.
Tens of thousands of people had fled the city, but those remaining faced severe restrictions of movement in and out of the city, which had dwindling food and water supplies, he said.
“The UN stresses again that all parties to the fighting are obligated to protect civilians under international humanitarian law, as well as the need for sustained and unhindered access to those who need help,” Mr Dujarric added.
Source- BBC Middle East