Bail was approved after lawyers from the People's Democratic Reform Committee (PDRC) submitted requests for the release of 184 detainees at 3am Wednesday, offering 50,000 baht cash bail or a 30,000 baht surety for each of them.
Most of the detainees were arrested on charges of breaking criminal law and the emergency decree.
The group released comprised 131 men, 46 women, four monks and a five-year-old child who was present at a PDRC protest site with a guardian.
The court denied bail for two PDRC co-leaders — Rawee Maschamadol and Tossapol Kaewthima — who managed the Energy Ministry rally site, citing arrest warrants that had already been issued for them.
The detainees were apprehended at rally sites at the Energy Ministry complex on Vibhavadi Rangsit Road and Phan Fah Bridge on Ratchadamnoen Avenue on Tuesday during a police operation to retake the occupied areas from the PDRC. One policeman and four protesters were killed at Phan Fah during the clash.
Police took the released demonstrators on four buses to the Government Complex at Chaeng Wattana, where they were encouraged to return home.