Hanoi, July 25 (Reporter) Flash floods on Wednesday night and early Thursday morning in Vietnam's northern mountainous province of Dien Bien killed at least two people and left five missing, Vietnam News Agency reported. Two others were injured, said the report. According to local authorities, the sudden flash floods occurred at night in four villages of Dien Bien district. As of Thursday morning, 10 local houses totally collapsed while over 40ha of farm produce were destroyed. About 100 people have been mobilized for the search and rescue mission. According to the General Statistics Office, natural disasters left 68 people dead and missing and injured 56 others in Vietnam in the first six months of this year...////...