Tim Hetherington, a veteran war photographer who was nominated for an Oscar for his work directing and producing the film Restrepo, was killed during an attack on the Libyan city of Misurata. Chris Hondros, a photographer who worked for Getty Images, was also killed in the attack. Two other journalists were injured. Misurata, the country’s third-largest city, has been besieged by the forces of Muammar Qadhafi for several weeks. The Committee to Protect Journalists has documented more than 80 attacks against the press since the civil war began in Libya, including four fatalities. Worldwide, 16 journalists have been killed so far this year, 25 percent of them while covering war zones, according to data compiled by CPJ. Last year, 44 journalists were killed, a quarter of them in war zones.