They were responding to an order announced on television last night for the two to report to the NCPO today between 10am-12am at the army auditorium in Bangkok.
They were accompanied by lawyer Nitithorn Lamlua.
The NCPO issued the summons after Gen Boonlert organised a reception party for Mr Veera at the Royal Turf Club. This was regarded as a political gathering held without NCPO approval.
Mr Veera was released on a royal pardon last week from a Cambodian prison where he served part of an eight-year jail sentence for espionage after crossing the border illegally.