A suicide car bombing claimed by the Islamic State group in Yemen’s southern city of Aden on Monday killed at least 45 pro-government recruits, officials said.

The men were at a staging area near two schools and a mosque when a pickup truck suddenly accelerated through the building’s gate as a food delivery arrived, exploding amid the crowd, witnesses said.

“Bodies and body parts are scattered all over the place,” said Mohammed Osman, a neighbor who rushed to the scene. “It was a massacre,” he said.

Over 60 wounded were being taken to three area hospitals, Yemeni security officials said, speaking on condition of anonymity because they were not authorized to speak to the media. They identified the bomber as one Ahmed Seif, distributing a photo of him smiling and holding an assault rifle next to a flag used by Islamic extremists as well as a rocket grenade launcher.

Yemen is embroiled in a civil war pitting the internationally recognized government and a Saudi-led coalition against the Shiite Houthi rebels, who are allied with army units loyal to a former president. The fighting has allowed al-Qaida and an IS affiliate to expand their reach, particularly in the south.

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