<span style="color: #222222;">At least six people, including a Japanese physician and aid worker, have been killed after unknown gunmen attacked their vehicle in the eastern Afghan city of Jalalabad today.<br />'' <br />'' Officials said that Tetsu Nakamura, head of Peace Japan Medical Services, died of his wounds after the armed attack that left five Afghan members of his entourage dead.<br />'' <br />'' No one immediately claimed responsibility for the attack.<br />'' Japanese Prime Minister Shinzo Abe said, he was shocked by the death of Dr Nakamura while the US embassy in Kabul condemned the shooting.<br />'' <br />''<br />''The United Nations Assistance Mission in Afghanistan expressed its revulsion over the killing.</span>