A spokesman for the Zimbabwe’s wildlife agency says the country made $2.7 million from the sale of more than 90 elephants to China and Dubai.

Money from the sales will be used to support conservation efforts, said Zimbabwe Parks and Wildlife Management Authority spokesman Tinashe Farawo.

Farawo said the agency was having difficulty controlling the population in its national parks, and that proceeds from the sales, made over a six-year period, will be used for the upkeep of its remaining elephants.

“We are struggling with a ballooning number of elephants. We believe in sustainable utilization of our resources, and these elephants must pay for their upkeep,”Farawo told CNN.

He said water levels were running low in rivers in its parks and officials have been using alternative water sources to feed the animals.

Botswana, Namibia and Zambia, homes to the largest population of African elephants, are among southern African countries seeking a lift in the ban on ivory trade placed by CITES, the global organization responsible for regulating the trade in endangered species.

In 2015, Zimbabwe put some of its wildlife on sale, saying it needed to save them from an impending drought that hit its national parks and reserves.

Residents and farmers in rural communities often complain about elephants invading their farmlands and destroying crops.

“We are selling because we need to manage the numbers ... we need to rescue people from the elephants because apart from being killed in attacks, the people have no money to buy medicines to treat the injury caused by the animals. So it is a sustainable policy,” Farawo said.