Thabane, 80, is suspected of involvement in the murder of his then wife Lipolelo, who was shot dead in June 2017, two days before he took office for a second stint as premier — and two months before he married his current wife Maesaiah.
Maesaiah Thabane, 42, has also been charged with the murder, and police suspect her of ordering assassins to do the job. Both deny any involvement.
Thabane had initially been scheduled to hear the charges on Friday, but left to South Africa, which surrounds this mountainous kingdom on all sides, for what aides said was a medical appointment.
He has said he will resign at the end of July, and several members of his own All Basotho Convention (ABC) party have been pressuring him to go sooner to avert a political crisis.
Lesotho, a tiny mountain territory of 2 million people, has a history of coups and political instability. Many fear a power vacuum unless the ABC can agree on a successor, and analysts expect a general election will have to be called soon. (Reporting by Marafaele Mohloboli Writing by Tim Cocks; editing by Olivia Kumwenda-Mtambo)
