Rocked northeastern japan. Authorities say theres no major damage but warn another tremor may hit within days. South koreas intelligence Officials Say north koreas defense chief may have been executed for treason. The move follows the purge. Officials from the National Intelligence service gave the update on twoed a Parliamentary Committee in seoul. They say minister of Peoples Armed forces Hyon Yong Choi was shot to death at a firing range in the capital late last month. They suspect he was executed after not obeying kim jongun and expressing his dissatisfaction. He visited moscow shortly before his death. He held talks with his russian counterparts. The former chief became the countrys defense chief last year. Kim has reportedly ordered several executions including his uncle in december 2013. He was considered to be second in power in the north. Officials in seoul say the execution was carried out without a decision by the Political Bureau of the Union Workers party of korea or court