Saudi Arabia’s war of aggression against Yemen is provoking anger towards the United States as American weapons have been widely used in the air campaign, according to a report.

The Saudi-led airstrikes have taken a heavy toll on civilian life and property, ripping through markets, apartment buildings and refugee camps, The New York Times reports.

The Times cited an errant strike which destroyed a water bottling plant in Hajja miles from any other buildings, killing 13 night-shift workers.

“Nothing in the ruins suggested the factory was used for making bombs, as a coalition spokesman had claimed. And it was far from any military facility that would explain the strike as a tragic mistake: For miles around, there was nothing but desert scrub,” the report said.

Saudi Arabia launched its military aggression against Yemen on March 26 – without a UN mandate – in an effort to undermine Yemen’s popular Houthi Ansarullah movement, whose fighters had forced the US-backed president, Abd Rabbuh Mansour Hadi, into exile.

Instead of turning the Yemeni people against the Ansarullah fighters, The Times reported, the airstrikes have created civilian resentment towards Saudi Arabia and its partners, including the United States.

The onslaught has claimed more than 4,300 lives and displaced more than 1.3 million others since March, according to United Nations agencies.

Saudi Arabia has never acknowledged that coalition airstrikes have killed civilians even after some of the deadliest raids.

“Why would we acknowledge something that doesn’t exist?” said Brig. Gen. Ahmed Asiri, the coalition’s spokesman.

The US has been providing Saudi Arabia with intelligence and logistical support.

Recent investigations of airstrike sites, far away from any perceived military target, have shed light on the US involvement. In July, Human Rights Watch visited four attack sites in Yemen’s farming fields and found that all weapons, including cluster munitions, used were US-manufactured.

Steve Goose, director of Human Rights Watch's arms division, said last month the United States was already aware that Saudi Arabia has used cluster munitions in Yemen.

The United States is finalizing a $1 billion arms deal to provide more weapons to Saudi Arabia, including missiles for its F-15 fighter jets.