Wildlife officials in Kenya are on the lookout for a group of ivory poachers after a family of 11 elephants was found shot and killed in Tsavo National Park on Saturday. Kenya banned the trade of ivory in 1989, and while elephant poaching did enter a period of decline, the recent market demand has created a fierce resurgence. Saturday’s incident is one of the largest elephant slaughters in Kenya’s history. “We’ve seen nothing as bad as this since the 1980s,” said Kenyan researcher Iain Douglas-Hamilton. “We’re right back to where we were.” The group of poachers, whom officials have called a “gang of 10," are being pursued by by rangers using helicopters and police dogs.