Cecil the lion's brother, Jericho, is also illegally killed in Zimbabwe,

The brother of slain Cecil the lion, named Jericho, was killed Saturday in Hwange National Park in Zimbabwe, a senior park official told CNN.

Jericho was gunned down by a hunter operating illegally, said Johnny Rodrigues, head of the Zimbabwe Conservation Task Force.

Cecil was also killed illegally, provoking an international outrage because he was a protected animal, and Zimbabwe is seeking the extradition of American dentist Walter Palmer on accusations that he and others illegally hunted the lion, authorities said.