Al Jazeera says two of its correspondents and two camera crew have been killed in an Israeli strike in Gaza City on Sunday, citing the director of a local hospital. "Al Jazeera journalist Anas al-Sharif has been killed alongside three colleagues in what appears to be a targeted Israeli attack, the director of Al-Shifa hospital in Gaza City has said," the Qatar-based broadcaster said. "Al-Sharif, 28, was killed on Sunday after a tent for journalists outside the main gate of the hospital was hit. The well-known Al Jazeera Arabic correspondent reported extensively from northern Gaza." Israel's military said it had struck an Al Jazeera correspondent in Gaza, calling him a "terrorist" who "posed as a journalist". "A short while ago, in Gaza City, the IDF struck the terrorist Anas Al-Sharif, who posed as a journalist for the Al Jazeera network. Anas Al-Sharif served as the head of a terrorist cell in the Hamas terrorist organisation and was responsible for advancing rocket attacks against Israeli civilians and IDF troops," the military said on Telegram. Palestinian journalists' groups condemned the killings. A press freedom group and a UN expert previously warned that al-Sharif's life was in danger due to his reporting from Gaza. UN Special Rapporteur Irene Khan said last month Israel's claims against him were unsubstantiated. In July, the Committee to Protect Journalists urged the international community to protect al-Sharif. Reuters/AFP