According to locals, since Tuesday afternoon, floodwaters from the Thu Bon River carried garbage to Hoi An coast and then strong waves washed the trash ashore.
"This trash comes from other places due to floodwaters; the area does not discharge it to the sea," said Huyen, owner of a restaurant on An Bang beach.
Around three kilometers from downtown Hoi An, An Bang was put in the international limelight when CNN listed it as one of the 100 best beaches on earth in 2011.