Two years after Cecil the Lion was killed in a national park in Zimbabwe, sparking international outrage, his son Xanda was killed in a trophy hunt.

The lion was shot on July 7 in a hunting area just outside Hwange National Park in Zimbabwe, according to Andrew Loveridge, an Oxford University researcher who had studied both Cecil and his son. Xanda, who was 6 years old, was wearing an electronic collar that was put on by researchers to monitor his movements.

“As researchers we are saddened at the death of a well-known study animal we have monitored since birth,” Mr. Loveridge said in an email.

The Telegraph reported that Richard Cooke, of the company RC Safaris, had led the hunt, though it was not immediately clear who killed the lion.