Hong Kong police put bailed pro-democracy leader Albert Ho back under arrest

Solicitor, 71, had been charged under national security law and was released to be treated for lung cancer

Hong Kong police have arrested a veteran pro-democracy politician who was out on bail for medical treatment after spending more than a year in detention on a subversion charge.

Albert Ho, 71, once led the city's largest opposition group, the Democratic party, and runs his own law firm. Police handcuffed Ho and took him away from his home in a vehicle on Tuesday, a Reuters witness said.