An Egyptian jihadist group released video footage on Tuesday that it said showed the execution of two army informants in the insurgent flashpoint of the Sinai Peninsula, AFP reports.
The new video posted on YouTube shows the "confessions" of four men who admitted to being informants.
It then shows a man shooting two handcuffed men, one of whom is also blindfolded, in the head. However, it is not clear if the two men killed were among those had confessed.
Jihadists are also shown manning checkpoints and searching for soldiers and policemen, and the footage features a militant vowing to launch more attacks on Egyptian security forces.
Ansar Bayt Al-Maqdis (lit. Partisans of Jerusalem) says it has killed at least 12 people since August last year, often by beheading, for allegedly working for Israel's Mossad spy agency.
Security in the Sinai Peninsula bordering Israel has worsened since the army ousted Islamist president Mohammed Morsi in July last year.
Terrorists have killed scores of security personnel, saying the attacks are in retaliation for a brutal government campaign against Morsi's supporters.
Among the attacks claimed by the group since the ouster of Islamist president Mohammed Morsi was the assassination of a top Egyptian police general, who was gunned down as he left his home in a west Cairo neighborhood, and a bus bombing on a tour bus filled with South Korean tourists in the Sinai.
The group has also claimed responsibility for several rocket attacks that targeted the Israeli resort city of Eilat.