nakamura tetsu spent decades in the country providing humanitarian support improving the lives of theeople. in addition to his medical activities, nakamura helped build irrigation canals to restore the country as farmlands so the hungry could be fed. he was shot and killed by unidentified gunmen while traveling by carn an eastern province sources ofhef a fan intelligence service told n investigators have questioned a number of people about their suspected involvement in the attack based on security camera footage. but they have yet to obtain any strong evidence pointing to the assailants. the governor of the province said he'd determined to solve the case. >> what nakamura did, afghan is going to remember him forever. i am sure we will reach and find the killers, and the killers we will bring to the justice. >> many people in the country echo that sentiment. >> translator: nakamura worked hard for us by building irrigation canals. i really hope the killers will be caught. >> the investigation faces challenges due to the worsening security situation. the united states has been drawing

more than 1,000 people joined a memorial service on tuesday for nakamura tetsu. spent years in afghanistan providing medical services and building irrigation canals to restore rmlands and feed the hungry. >> translator: mr. nakamura improved the lives of afghans. i will never forget his achievements. >> the governor of the province where nakamura was killed vowed to track down those responsible. nakamura was shot and killed by unidentified gunmen in the province of nangarhar on december 4th of last year. he was 73 years old. >>> a retired professional sumo wrestler from russia is now working on the second chapter of his life in japan. nhk world's reporter asked him about the new endeavor he is taking on. >> reporter: i first met 37-year-old nikolai eivanof fiv years ago. he came to japan when he was 18 years old to become a professional tsunami presser. he fought under the name amura from his russian homeland and retired two years ago in 2018. >> reporter: rf after retiring, ivanof decided to stay in japan and become a sports trainer. during the coronavirus pande