Zambian opposition leader Hakainde Hichilema has been detained and questioned by police for committing treason, his lawyer said on Tuesday, APA reports quoting Reuters.
Hichilema, an economist and wealthy businessman known as "HH", was defeated by President Edgar Lungu in an election last August, which he described as fraudulent. His attempts to mount a legal challenge have so far been unsuccessful.
On Tuesday Hichilema was taken in for questioning after his house was raided by the police.
"They have detained him for having committed treason along Limulunga road by obstructing the presidential motorcade," his lawyer Jack Mwiimbu told Reuters.
"We are definitely challenging the police action. We expect a formal charge tomorrow morning."
Police did not say why they had detained Hichilema.
"Obviously he will remain in detention," police spokeswoman Esther Mwaata Katongo told Reuters without elaborating.
A spokesman for Hichilema's United Party for National Development (UPND), Charles Kakoma, said police broke doors before raiding the opposition leader's house in an exclusive suburb of Lusaka.
He said police had blocked the access road to the residence but did not say what they were looking for.
"They broke the doors and teargassed the house," Kakoma said. "They left the home after picking him."
Mwiimbu said Hichilema was unwell after the raid.