Phayao went to the Army Club to ask Army deputy spokesman Col Winthai Suwaree about the whereabouts of her son, Natthapat Akhad. She said she was not given an answer.
She said her son was taken away by troops when the red-shirt rally on Utthayan Road was dispersed by troops and she has not heard about him since then.
She would file a complaint with the Criminal Court to grant protection to normal demonstrators, who are not leaders of the rally.
Phayao and her son have been campaigning to demand justice for the death Phayao’s daughter who was killed when troops cracked down on red-shirt protesters in May 2010.