Maguwu, who was arrested early this month appealed to the High Court for bail after Harare Magistrate Don Ndirowei denied him freedom when he appeared in court last week.
In his nine-page judgment Justice Bhunu ruled that Magistrate Ndirowei had not erred in denying bail to the rights researcher.
“In the result, having found no misdirection on the part of the presiding magistrate it is accordingly ordered that the appeal be and is hereby dismissed,” reads part of Bhunu’s judgment.
Bhunu said Maguwu is facing a serious offence which if convicted is punishable by up to 20 years in prison.
“An offence punishable by up to 20 years imprisonment is undoubtedly a serious one. The State alleges that the appellant makes a living out of publishing false information detrimental to his won country. That kind of behaviour if proved is treacherous and abominable particularly in these times of national economic strife,” said Bhunu.
Maguwu, the director of the Centre for Research and Development (CRD) is accused of publishing falsehoods against the State with the intention to cause prejudice to the security or economic interests of the country.
The State alleges that Maguwu authored several documents containing false information concerning activities at Chiadzwa diamond fields and purported human rights abuses committed by the police and soldiers on panners which he passed on to Chikane during his visit to assess diamond mining operations in Zimbabwe last month.
He is back in court on Wednesday on routine remand.