Photographer Tim Hetherington has been killed covering the escalating violence in the Libyan city of Misrata while three other western journalists have been injured.
Hetherington, 40, the British photographer and co-creator of Oscar-winning documentary Restrepo, was killed in Misrata on Wednesday. Hetherington is believed to be the first western journalist killed covering the Libyan conflict.
Hetherington posted on Twitter on Tuesday: "In besieged Libyan city of Misrata. Indiscriminate shelling by Qaddafi forces. No sign of NATO."
Chris Hondros, 41, a US Pulitzer nominee who works for Getty Images, was also killed. His work has appeared in magazines and newspapers around the world. His awards include World Press Photo honours and the Robert Capa Gold Medal, one of the highest prizes in war photography.
The British photographer Guy Martin, who works for the Panos agency, was critically injured. The fourth man was reported by the New York Times to be photographer Michael Christopher Brown, but his condition was not said to be life-threatening.