Some 3,200 saiga antelopes have died of unknown causes in west Kazakhstan, the country's emergencies ministry said on Saturday.
Earlier reports said around 1,200 had died.
"As of Friday evening it was established that 3,200 saiga antelopes had died in an area of 4,500 hectares," a ministry statement said.
It also said there was no indication of an outbreak of any virus in the area.
The first dead saiga antelopes were discovered on May 18.
The saiga antelope, listed as an endangered species by the International Union for Conservation of Nature, inhabits south Russia, Kazakhstan and parts of Mongolia.
ASTANA, May 22 (RIA Novosti)
