BANGKOK, Nov. 18 (Xinhua) -- Some 21 buffaloes in Thailand's eastern Prachin Buri province have died in 3 days, which local official said may be caused by Hemorrhagic Septicemia.

These buffaloes belonged to 31-year-old Suthat Somthong, who lives in Kabin Buri district of the province.

Suthat said one of the 47 buffaloes died on Tuesday, following by another one on Wednesday and 19 more on Thursday, the Bangkok Post reported.

Local officials and vets were investigating the issue and trying to control the spread of the disease by burning those dead animals and monitoring the remaining buffaloes.

Wanlop Prawatwong, chief of Kabin Buri district, said it was not yet known what kind of disease had struck these buffaloes, but it was presumably caused by Hemorrhagic Septicemia, an acute, highly fatal form of pasteurellosis that affects mainly water buffalo, cattle and bison.

Wanlop said tissue samples of these dead buffaloes had been sent to livestock office in Chon Buri for testing.