When Al Jazeera journalist Hani Mahmoud saw an airstrike lighting up the sky above Al-Shifa Hospital in Gaza City, he knew immediately that his colleagues were dead.

Sharif, 28, drew millions of followers on social media and emerged as one of the top voices in the Arab world for his chronicling of the war in Gaza.

Sharif was killed when Israel targeted a tent used by media in northern Gaza, alongside six others, Al Jazeera said.