A US drone strike has killed six suspected Daesh militants in central Yemen. Photo: AFP file. 

ADEN: A US drone strike has killed six suspected Daesh militants in central Yemen, security sources said Wednesday.

The strike in Bayda province would be the second known US strike against Daesh in Yemen.

The first came just over a week ago, when the US military said it had killed dozens of terrorists at Daesh training camps in the same province.

The US is the only country known to operate armed drones over Yemen, but its previous known strikes have targeted Al-Qaeda.

Daesh has however risen to prominence in the country's civil war.

Washington has intensified its drone war against Yemen-based terrorists since US President Donald Trump took power in January.

A Saudi-led coalition, which entered Yemen's conflict in March 2015 to prop up the government of President Abedrabbo Mansour Hadi against the Iran-backed Huthis.

The Yemen war has killed 8,673 people and wounded 58,636 since 2015, including many civilians, according to the United Nations.

Another 2,100 have died of cholera this year.

The top UN aid official arrived in Yemen Tuesday on a five-day trip aimed at drawing attention to what his organisation has called the world's top humanitarian crisis.