India, Oct. 30 -- The death toll of elephants has risen to seven after three more were found dead in Bandhavgarh Tiger Reserve (BTR) in Madhya Pradesh on Wednesday morning, officials said.

The condition of the two other elephants remains critical.

Initial investigations suggest that it was a suspected case of poisoning.

A team of National Tiger Conservation Authority (NTCA) in Delhi has reached Bandhavgarh for investigation.

"A team of eight doctors is conducting postmortem of the elephants. After this, they will be buried. For this, 300 sacks of salt have been ordered. Pits are being dug with the help of two JCBs," said Prakash Verma, deputy director, BTR.

The two other critical elephants are being treated by veterinary doctors of B...