The Civil Court handed down an unsuspended two-month jail sentence on three activists for contempt of court.
Darunee Krittaboonyalai, a businesswoman, Sudsa-nguan Sutheesorn, a lecturer at Thammasat University's Social Science Faculty, and Picha Vichitsilp, a lawyer for the United Front for Democracy Against Dictatorship, led a group of protesters to lay wreaths and hold placards at the Civil Court on Feb 21, criticising one of its rulings.
They were disappointed the court had ruled two days earlier the government might not exercise its power under the emergency decree to disperse the protests by People's Democratic Reform Committee because the Constitutional Court had ruled they were peaceful.
Since Mrs Sudsa-nguan and Mr Picha confessed, their jail term was commuted to one month.
The court also issued an arrest warrant on Mrs Darunee, who failed to show up on Monday.