"The BKSDA and police must investigate this case because elephant deaths happen almost every year but the perpetrators are never punished," Bengkulu ProFauna spokesman Radius Nursidi said here Thursday.
He said four Sumateran elephants were found dead at an oil palm plantation in the past month. Although the results of an official autopsy were not yet known, it was strongly believed the animals were poisoned to death.
The fact that elephant deaths by unnatural causes occurred almost every year indicated that the government was not seriously handling wildlife conservation, he said.
According to data collected by ProFauna, seven elephants were found dead in the same region in the period 2004-2007. In 2009 there were two such cases and in 2010 one.
Overall, a total of 14 elephants had died by unnatural causes within seven years from 2004 to 2011.
"Ironically, none of the cases was processed legally. This is something that needs to be explained by the BKSDA and police," he said.
PoroFauna also urged BKSDA to close the road used by PT Alno Agro Utama to transport oil palm fruits because this road was possibly used by elephant hunters to enter the animals` habitat.