484 civilians killed in strikes: US military

— Attacks on Daesh group targets by US-led coalition forces have killed 484 civilians since mid-2014, the US military reported on Friday.

The Operation Inherent Resolve coalition added 132 civilians to the total in its April report, including 105 who died when a US aircraft dropped a bomb on an Daesh sniper target in west Mosul on March 17.

The bomb inadvertently set off a large cache of explosives, collapsing a building on top of civilians sheltering below.

Airwars, a journalist collective based in London that compiles data from public sources, estimated more than 3,800 noncombatants were killed since the operations began in August 2014.

The Syrian Observatory for Human Rights estimates that in the month from April 23 to May 23, 225 civilians were killed in Syria alone, the heaviest monthly toll since 2014.

The Inherent Resolve task force “takes all reports of civilian casualties seriously and assesses all reports as thoroughly as possible”, the US-led task force said in a monthly statement.

The total reported on Friday was still far short of what nongovernmental organisations estimate for civilian deaths in the conflict in Iraq and Syria.

The official report on Friday only covers reported incidents through the end of April.