The death of blackbucks due to some unidentified disease do not seem to be stopping at Nandan Van Zoo. One more death of blackbuck was reported thereby raising the toll to ten, informed Chief Conservator of Forest (Wildlife) KC Bevarta on Friday. Meanwhile, a five-member team of doctors from Indian Veterinary Research Institute (IVRI), Bareilly, Uttar Pradesh reached Raipur and examined the blackbucks. However, they could not ascertain the reason of their death.