At least ten foreign military instructors in operations with explosives have been killed in Chechnya recently, spokesman for the federal forces in the North Caucasus Ilya Shabalkin told Interfax on Friday. Most of them are citizens of Turkey, Canada, Algeria and Britain, Shabalkin said. According to intelligence available to law enforcement agencies, their poor qualifications and errors in assembling and planting home-made bombs causes the death of five to seven militants each month, he said. Most of them are young people aged 16-20, who were entangled in the activities of illegal armed groups through threats, deceit or promises of large payments, he said.