Associated Press photojournalist Anja Niedringhaus was killed on April 4, 2014 while covering elections in Afghanistan. The AP has released a collection of some of her most compelling images, which follow. One of her most recent images from Afghanistan shows people lining up to get their registration card on the last day of voter registration for the upcoming presidential elections outside a school in Kabul, April 1, 2014. Anja Niedringhaus/AP Photo

An Afghan woman waits in a changing room to try out a new Burqa, in a shop at in the old city of Kabul, Afghanistan, April 11, 2013. Anja Niedringhaus/AP Photo

An Afghan girl helps her brother down from a security barrier set up outside the Independent Election Commission (IEC) office in the eastern Afghan city of Khost, April 3, 2014. Anja Niedringhaus/AP Photo

An Afghan National Police officer mans a checkpoint in the outskirts of Maidan Shahr, Wardak province, Afghanistan, May 15, 2013. Anja Niedringhaus/AP Photo

Iraqi women line up for a security check by British soldiers on the outskirts of Basra, as they try to flee from this southern Iraqi town, March 30, 2003. Anja Niedringhaus/AP Photo

Palestinians enjoy a ride at an amusement park outside Gaza City, March 26, 2006. Anja Niedringhaus/AP Photo

An Israeli soldier jumps off an armored vehicle carrying a flag of Israel's 60th anniversary as he celebrates with his unit their return from the Gaza Strip on the Israeli side of the border, Jan. 16, 2009. Anja Niedringhaus/AP Photo

An Afghan boy flies his kite on a hill, May 13, 2013, overlooking Kabul, Afghanistan. Anja Niedringhaus/AP Photo

Hundreds of U.S. Marines gather at Camp Commando in the Kuwait desert during a Christmas eve visit by Santa Claus, Dec. 24, 2002. Anja Niedringhaus/AP Photo

George W. Bush carries a platter of turkey and fixings as he visits U.S. troops for Thanksgiving in Baghdad, Nov. 27, 2003. Anja Niedringhaus/AP Photo

A U.S. Marine of the 1st Division carries a mascot for good luck in his backpack as his unit pushed further into the western part of Fallujah, Iraq, Nov. 14, 2004. Anja Niedringhaus/AP Photo

A U.S. Marine cries during the memorial service for 31 killed U.S. servicemen at Camp Korean Village, near Rutbah, western Iraq, Feb. 2, 2005. Anja Niedringhaus/AP Photo

Pakistani bank notes covered in blood are displayed on the body of a dead suicide bomber after police found them in his pocket after an attack on the former Afghan intelligence headquarters, March 12, 2014, in the center of Kandahar, Afghanistan. Anja Niedringhaus/AP Photo

An Afghan carpet seller holds up a framed carpet depicting Afghan President Hamid Karzai in his store in Kabul, Afghanistan, March 30, 2014. Afghans go to the polls April 5, 2014 to choose a new president. Anja Niedringhaus/AP Photo