Mariam Dagga, a visual journalist who freelanced for The Associated Press and other news organizations, and produced harrowing images of the war in Gaza, was killed Monday by an Israeli strike on a hospital. She was 33.

Through photographs and video, Dagga captured the lives of ordinary Palestinians facing extraordinary challenges: families displaced from homes, people crowding around aid trucks, mourners attending funerals and doctors treating wounded or malnourished children.

During the war, Dagga regularly based herself at Nasser Hospital in Khan Younis.

She was among 20 people, including five journalists, killed there Monday by Israeli strikes, according to health officials and news organizations.

“She worked under incredibly difficult circumstances to bring stories from Gaza to the world, particularly coverage of the war’s impact on children," said Julie Pace, AP’s Executive Editor and Senior Vice President. "We are devastated by her death and urgently seeking more clarity on the strike.”

The Israel-Hamas war has been one of the bloodiest conflicts for media workers, with at least 189 journalists killed in Gaza in the 22-month conflict, according to the Committee to Protect Journalists.