The leader of a labor union was detained for questioning Sunday on charges of leading violent rallies in downtown Seoul last month.
  

Han Sang-gyun, the head of South Korea's second-largest umbrella labor union, Korean Confederation of Trade Unions, was put behind bars after a Seoul court issued a warrant to detain him.
  

"The details of his crime have been ascertained enough, and there is enough reason and need to detain him," Judge Kim Do-hyung said in issuing the warrant.
  

Han was wanted on suspicion of orchestrating a massive anti-government protest on Nov. 14 that led to a violent clash with the police.
  

The KCTU chief turned himself in to police Thursday after hiding out at Jogye Temple where he had been holing up since Nov. 16.
  

The prosecution alleges that Han faces eight charges, including disruption of the execution of public duty and damage of public property. (Yonhap)