PITTSBURGH — An American doctor accused of killing a lion in an illegal hunt in Zimbabwe said Tuesday that he had complied with all rules and regulations, filled out all the necessary paperwork and obtained the correct permits.

The Zimbabwe government said Sunday that Dr. Jan Seski of Murrysville, Pennsylvania, used a bow and arrow in April to kill a lion without approval, on land where such hunting was not allowed.

But in a statement issued by his attorney, Seski said he had engaged in a “lawfully permitted hunt” and that it happened in July, not April, as Zimbabwe officials had said.

“During this trip, Dr. Seski did lawfully hunt and take a lion,” said his Washington attorney, Gregory Linsin.

“As required by the rules in Zimbabwe, he promptly notified the Zimbabwean authorities and provided them with all of the information and paperwork required by law. He ensured that he was at all times in compliance with all rules, regulations and laws, and had the necessary permits required by Zimbabwe.”

The Zimbabwe government said no charges have been sought against Seski, though an investigation is continuing.

Seski is a gynecological oncologist who directs the Center for Bloodless Medicine and Surgery at Allegheny General Hospital in Pittsburgh.