Four Al Jazeera journalists were killed in an Israeli attack in Gaza, the Palestinian enclave, on Sunday, the director of Gaza's Al-Shifa Hospital said.

The deceased were identified as Al-Sharif (28), a well-known Al-Jazeera Arabic correspondent, correspondent Mohammed Qureikeh, camera operators Ibrahim Zaher and Mohammed Nufal.

Al-Sharif, who had been reporting regularly from northern Gaza for many years, was killed yesterday in an Israeli attack on a tent set up for journalists outside the main gate of Al-Shifa Hospital.

Shortly before his death, Al-Sharif wrote on Exe (formerly Twitter) that Israel has begun heavy bombardment of the eastern and southern parts of Gaza City. His last video shows the sound of a massive Israeli missile strike, causing the dark sky to momentarily glow orange.

In a statement after al-Sharif's killing, the Israeli military accused him of leading a Hamas branch, claiming to have documents containing "concrete evidence" of his involvement with the Palestinian group.

However, Mohamed Shehada, an analyst at the Euro-Mediterranean Human Rights Monitor, told Al Jazeera that there was "no evidence" of al-Sharif's involvement in violent acts. "His daily routine was to stand in front of the cameras from morning to evening," he said.

Recently, Al-Jazeera media network strongly condemned the Israeli army's "provocative campaign" targeting its journalists in the Gaza Strip, especially Al-Sharif.