Immigration police have arrested Sakoltee Phattiyakul, a leader of the People's Democratic Reform Committee, at the Suvarnabhumi International Airport on charges of intrusions into government's offices.
He was arrested at 11 pm Friday when he returned from the United States.
Police arrested him under Pak Kret police station’s warrant dated March 25 2014.
Police alerted the Department of Special Investigation to take over the case.
Sakoltee was taken to the Criminal Court to seek a court’s approval for his detention pending investigation.
Police said they would oppose his release on bail but the court Saturday granted bail for Sakoltee after he deposited assets worth Bt600,000 as a guarantee.
The court forbade him not to leave the country unless granted permission. The court also ordered him not to incite violence or lead protesters to close or besiege government offices again as key conditions for bail.