A candlelight vigil for Japanese physician Tetsu Nakamura, an aid worker who was killed in a shooting this week in eastern Afghanistan with five others, was held Thursday in the country's capital of Kabul.

Afghans lit candles in a square near the Japanese Embassy and remembered Nakamura's achievements as they mourned his death, with some participants holding flags of Japan and Afghanistan.

The 73-year-old representative of the Peshawar-kai aid group based in the southwestern Japan city of Fukuoka, and five Afghans, including his driver, were killed Wednesday as armed men attacked their vehicle in Jalalabad in the eastern province of Nangarhar.

Nakamura, who had been providing medical aid near the border of Afghanistan and Pakistan for years, was also involved in tree-planting activities and a project to improve the water supply to poverty-stricken areas after a drought hit Afghanistan in 2000.

"The vigil shows our respect and love for him and our shame that we couldn't save him," the Associated Press quoted a local activist as saying in a report from Kabul.

Scores of Afghans shocked at the killing took to social media, posting photos of Nakamura with the message "Please forgive us." There have also been requests for a state funeral to be held for the Japanese doctor, according to the Afghan government.

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