Roger Gower was helping rangers find the killers of an elephant when the poachers fired, officials say.

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NEW: Three people are charged in the death of a helicopter pilot in Tanzania, authorities say

Roger Gower was helping park rangers find the killers of an elephant

Elephant poachers fired at him while in flight, a conservation fund says

CNN  — 

Three people have been charged in the death of a British pilot whose helicopter was shot down by elephant poachers in Tanzania, said Jonathan Shana, criminal investigation commander in Tanzania, on Sunday.

Roger Gower was working with Tanzanian wildlife authorities when the poachers fired on his helicopter and fatally wounded him Friday, said Dan Friedkin, chairman of the Texas-based nonprofit Friedkin Conservation Fund.

“We are profoundly saddened by the loss of our dear friend,” he said.

Gower managed to land the chopper but died before he was able to be rescued, said Lazaro Nyalandu, the country’s former tourism minister, who said he flew with Gower many times.

Tanzania gets ‘The Devil’ as it cracks down on elephant poaching

Gower was helping rangers find the killers of an elephant when the poachers fired at the helicopter with an AK-47, Nyalandu wrote on Twitter.

Photos of the crash site, provided by Tanzania National Parks, show the helicopter on its side in dense grass, its tail broken off. A bloody bullet hole can be seen in one of the seats.

“Those poachers who killed Capt Roger are coward, evil, and sad people. A fine hearted individual gone too soon, and our hearts are broken,” Nyalandu wrote.

The names of the suspects and charges were not immediately available.

The shooting happened at the Maswa Game Reserve, which borders the Serengeti National Park in northern Tanzania, Nyalandu said. Elephant poaching is prevalent on the reserve, according to the Friedkin Conservation Fund.

It was not immediately clear whether Gower was working for the fund when he was killed.

“This tragic event again highlights the appalling risk and cost of protecting Tanzania’s wildlife,” Friedkin said.

The killers are still at large, Nyalandu said. Tourism Minister Jumanne Maghembe flew to Maswa with senior government officials to lead the search, he said.

“Capt Roger represented the very best in human spirit,” Nyalandu wrote. “He loved people and the wildlife. He died serving both.”

CNN’s Elena Sandyrev and Samira Said contributed to this report.