Thawil was scheduled to testify today, according to Pol Colonel Prawet Moonpramuk, a DSI deputy director-general who heads the investigation team. Thawil is now set to appear next Wednesday.
Thawil served as the NSC secretary-general and was also secretary-general of the Centre for Resolution of Emergency Situation (CRES) set up by the Democrat-led government to deal with increased violence during the 10 weeks of protests by the red shirts beginning in mid-March 2010.
The DSI wants to ask Thawil about the CRES’s orders for operations by security officials.
Thawil was moved to become a prime ministerial adviser shortly after the pro-red Pheu Thai Party came to power last year.
The DSI also plans to summon Senator Gen Lertrat Ratanawanit for questioning about his role in negotiating with red-shirt leaders on May 18, 2010, according to Prawet, who said investigators wanted to go into detail about the results of those talks.
Prawet said the DSI had sent a written request to the Army to produce the CRES orders it received during the political unrest.