Lesotho’s prime minister failed to show up in court on Friday to be charged with murder in the killing of his estranged wife, and police said he might have gone to neighboring South Africa for an undisclosed ailment.

Prime Minister Thomas Thabane's current wife, Maesaiah, also has been charged with murder in the 2017 death of Lipolelo Thabane. She had briefly fled the kingdom for South Africa, avoiding a police summons.

Deputy Commissioner of Police Paseka Mokete, who led the investigation, said he had heard rumors that the 80-year-old prime minister had gone to South Africa for a medical check-up.

“I have spoken to Thabane’s lawyer and he told me he is not aware of the prime minister’s whereabouts,” Mokete said. “We are now waiting for him to return so that he can be charged.”

It would be premature to seek an arrest warrant for the prime minister as police did when Maesaiah Thabane refused to honor a police summons last month, Mokete said.

On Thursday, Mokete confirmed to The Associated Press that the prime minister would appear at Maseru Magistrates Court to face a murder charge and an attempted murder charge in connection with a shooting of a friend of Lipolelo Thabane.

Thomas Thabane is the first sitting prime minister in Lesotho to be charged with any crime. He has announced he would step down by the end of July, if not sooner, amid pressure from the ruling party, which says he is no longer fit to rule.