Education Minister Teerakiat Jareonsettasin did not attend the weekly Cabinet meeting on Tuesday, after he made remarks apparently attacking Deputy PM and Defence Minister Gen Prawit Wongsuwan.
Teerakiat went to his office at the Education Ministry and refused to speak with the media.
A person who identified himself as Teerakiat’s secretary, said in a phone call that the minister “is not comfortable to speak on the matter and will not talk about it again”.
Teerakiat is due to attend a meeting at 3pm at the ministry.
BBC Thai reported that at a reception at the Thai embassy in London last Friday, Teerakiat said that he would step down from his post if he were exposed of being in possession of expensive luxury watches.
Prawit has been embroiled in a watch scandal in recent months. He was seen wearing at least 25 expensive luxury watches on different occasions. He did not declare possession of assets worth more than Bt200,000 when he joined the Cabinet in 2014.