Bodies of people killed in a suicide attack are covered in blankets in a mosque in Sanaa on Friday.

Multiple suicide bombings claimed by the Islamic State group killed at least 142 people Friday at Shiite mosques in Yemen’s capital — one of the strife-torn country’s deadliest ever terror attacks.

Custodian of the Two Holy Mosques King Salman ordered urgent medical aid to be sent to Yemen.

Saudi Arabia condemned the attacks “which aimed to destabilize the security situation in Yemen.” The Kingdom reiterated its support to the Yemeni people, SPA said.

“Saudi Arabia monitors with concern the developments in Yemen especially attempts to bomb the presidential palace and neighboring areas in Aden and the terrorist attacks in Sanaa on Friday,” said the SPA.

The killings were the first claimed by IS in Yemen and represent a strong show of force by the group in a country where rival Al-Qaeda is the most prominent militant organization.

Charred bodies and pools of blood were seen at the scene of the blasts, which targeted supporters of the Houthi Shiite militia that has seized control of the capital Sanaa.

Worshippers rushed the wounded to hospitals in pick-up trucks, while others evacuated mutilated bodies.

One suicide bomber struck inside Badr mosque in southern Sanaa while another targeted worshippers as they fled outside, witnesses said.

A third suicide bomber targeted Al-Hashush mosque in northern Sanaa, while a fourth struck outside the mosque, according to the Saba news agency, which is now controlled by the Houthis.

Houthi TV said hospitals had made urgent appeals for blood donations.

The imam of the Badr mosque was among the dead, a medical source said. Another suicide bomber blew himself up outside a mosque in the northern Houthi stronghold of Saada, a source close to the militia said.

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