Yemen presidential palace levelled by Saudi airstrikes

Airstrikes by the Saudi-led coalition fighting Yemen's Shia rebels targeted the presidential palace in the heart of the Yemeni capital on Monday, leaving at least six people dead and 30 wounded, according to health officials.

The officials, who spoke on condition of anonymity because they were not authorized to speak to the media, said the six killed were all civilians. It was not known if there were any Houthi rebel leaders inside the presidency at the time of the airstrikes in Sanaa and if there were any casualties among them.

The three-floor presidency building was completely flattened, while surrounding buildings in the city's busy Tahrir district including a famous five-star hotel were heavily damaged. Cars were charred and pools of blood covered the pavement.

Many were believed to have been buried under the rubble.

Ambulances rushed to the area to retrieve the casualties.

The Norwegian Refugee Council, an aid group operating in Yemen, said it was "appalled by Saudi-led coalition strikes on a highly-populated business district in Sana'a earlier today."

"We abhor the ongoing use of violence to intimidate civilian populations under the guise of efforts to protect them. Yemeni people are not collateral. Adherence to the laws of war is not optional," Suze van Meegen, the group's acting country director, said in a statement.

Targeting top Houthi officials

The Saudi-led coalition has been at war with the Houthis since 2015 to restore the country's internationally recognized government to power. The war has killed more than 10,000 people and driven three million from their homes.

Last month, the coalition killed a top Houthi leader, Salah al-Sammad in the Red Sea port city of Hodeida. Al-Sammad was also the acting president of the territory under rebel control while the Houthis' leader, Abdel-Malek al-Houthi, has mostly kept out of the public eye, addressing Yemenis only in occasional newscasts on rebel-run outlets.

Monday's airstrikes appeared to have targeted al-Sammad's successor, Mahdi al-Mashat.

Witnesses described a scene of devastation. One resident said he saw bodies blown up before his eyes, a body thrown by the force of the blast against a shop and a car washer killed by shrapnel. The eyewitnesses spoke on condition of anonymity fearing reprisals.

Windows of surrounding houses were shattered while the nearby Sheba hotel had its window and entrance door blown out. Security forces cordoned off the area and forced journalists away from the site area.

The sprawling presidency compound in Tahrir consists of several buildings, walled off from the rest of the district.

Images that surfaced on social media in the aftermath of the strikes show bloodied faces of the wounded and columns of smoke rising over Sanaa.