This photo taken on June 29, 2020 shows a billboard promoting the Law of the People's Republic of China on Safeguarding National Security in Hong Kong Special Administrative Region  in the Central district in Hong Kong. (PHOTO / XINHUA)

Former lawmaker Albert Ho Chun-yan was arrested by Hong Kong’s national security police on Tuesday morning on suspicion of perverting the course of justice while he was out on bail on another national security charge.

Confirming his detention, the National Security Department of the Hong Kong Police Force said the 71-year-old arrestee was being detained for inquiries.

Ho was also ordered to surrender his travel documents, refrain from leaving the special administrative region, observe a curfew and report to the police thrice a week

Ho had once led the opposition Democratic Party, and was formerly vice-chairman of the now-defunct Democratic Alliance in Support of Patriotic Democratic Movements of China. 

He was previously charged with inciting subversion of State power and was remanded in custody until he applied to the High Court for bail in August last year, and was subsequently freed.

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The bail conditions include a HK$700,000 ($89,000) cash guarantee, a ban on publishing or republishing statements deemed harmful to national security, and being prohibited from contacting any foreign official or legislator.

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Ho was also ordered to surrender his travel documents, refrain from leaving the special administrative region, observe a curfew and report to the police thrice a week.