Mr Hichilema has been in custody for more than a fortnight
Zambia’s presidential spokesman Amos Chanda has denied allegations that President Edgar Lungu is influencing the case against opposition leader Hakainde Hichilema.
He has been charged with treason and accused of trying to overthrow the government. He was arrested after his convoy allegedly blocked the presidential motorcade.
Rights group Amnesty International and church leaders have condemned the arrest and continued detention of Mr Hichilema.
Mr Chanda told the BBC’s Focus on Africa programme that it would be against the law for President Lungu to interfere in an ongoing trial.
He added that it was the police who had interpreted the traffic incident as a treasonable offence.
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