CAIRO — An attack on a convoy killed 11 members of the Egyptian security forces in the Sinai Peninsula on Tuesday, Sept. 3, security and medical sources said.

Two were killed by a roadside bomb and the others were shot as they tried to flee, the security sources said. 

An Egyptian jihadist group behind some of the deadliest attacks on security forces claimed the attack.

Ansar Beit al-Maqdis (Partisans of Jerusalem), an al-Qaeda-inspired group based in the Sinai, uploaded video on YouTube late Wednesday purporting to show Tuesday’s ambush.

Last week, the group released a video showing the beheading of four men they accused of working for Israeli intelligence and said it carried out the execution in retaliation for a July airstrike that killed three of its fighters.

Militants in Sinai have stepped up attacks on policemen and soldiers since then-army chief Abdel Fattah al-Sisi toppled President Mohamed Morsi of the Muslim Brotherhood in July 2013.

Sisi was elected president three months ago and his government makes no distinction between the Brotherhood — which says it is a peaceful movement — and the Sinai militants.

Prime Minister Ibrahim Mehleb condemned Tuesday’s attack and said Egypt would continue to confront terrorism. “The world has witnessed now what the hands of terrorism are doing in our country,” he said in a statement. “Terrorism will not succeed in breaking the will of Egyptians.”