'Men in black' theory played down by DSI
The Department of Special Investigation has found scant evidence to support a theory that "men in black" killed Col Romklao Thuwatham at a rally in 2010.
Col Romklao's wife complained recently about a lack of progress in the case. DSI chief Tarit Pengdith said officials have been unable to find evidence which points to any new suspects.
The DSI, which is looking into 89 deaths which took place during the clashes between soldiers and red shirts in April and May in 2012, has finished a probe into 16 of them whose deaths allegedly involve state officers. It has forwarded its reports to city police.
Col Romklao, deputy chief of staff at the Prachin Buri-based 2nd Infantry Division, was hit by a bomb during an operation to retake from the red shirts an area at the Khok Wua intersection on Ratchadamnoen Klang Avenue on April 10, 2010.
The Abhisit Vejjajiva government, which ordered the army to disperse the protesters, said a group of black-clad people spotted in surveillance footage were responsible.
Mr Tarit describes the men in black only as a "hardcore group", but has no further details about their identity or whereabouts.