A military command in Vietnam's Mekong Delta on Tuesday said that they have defused 64 cluster bombs allegedly coming from local rivers.
Ha Sinh, a metal scrap dealer from Bac Lieu Province, said he found the bombs in aluminum tubes bought from a local scrap collector.
The collector, Doan Thi Tien, said she bought the tubes from a boat that dredges sand beneath local rivers. The tubes were found in the sand.
Bac Lieu military officials said the bombs were leftover from the Vietnam War.
Sand barges from the Mekong Delta are continually finding bombs in Vietnamese rivers.
In 2010, a barge in Can Tho pulled up a nearly 500 kilogram bomb from the delta's Hau River in November, just a month after it found another bomb of 300 kg.
In September, authorities in Bac Lieu also discovered 10 bombs leftover from the Vietnam War in construction material storehouses.