Officials in Hong Kong are investigating the deaths of eight monkeys in the region's oldest zoo, including 3 critically endangered Cotton-top Tamarins.

Hong Kong temporarily closes zoo after eight animals die in one day - Tests underway to determine cause of sudden deaths

A section of Hong Kong's oldest zoo closed on Monday after eight monkeys, including three from a critically endangered species, were found dead, a government statement said. "While awaiting test results,

Hong Kong authorities are investigating the deaths of eight monkeys found dead at a Hong Kong zoo, which was partly closed on Monday for disinfection, with necropsies launched to ascertain the cause of the animals’ deaths.