The Department of Special Investigation (DSI) is now planning to conclude within 45 days its enquiries into the deaths of 89 people and officials during the red-shirt rallies.
DSI director general Tharit Pengdit said yesterday after the conclusion was made, he would hold a press conference and submit the probe results to the Centre for Resolution of Emergency Situation (CRES).
"I have already set up 12 investigation teams to handle these cases," he said.
He said there will be policemen, public prosecutors and DSI officials on all teams, tasked with looking into each of the 12 bloody incidents.
These incidents caused the deaths of 89 people including Hiroyuki Muramoto, a Japanese cameraman, Polenchi Fadio, an Italian photographer, and high-profile red shirt Maj-General Khattiya Sawasdiphol.
Tharit has assigned DSI deputy director-general Pol Colonel Narat Sawettanan to oversee the probes by the 12 teams.
"We will pay extra attention to the deaths of Muramoto, Fadio, Khattiya, and the six people whose bodies were found inside the Pathumwanaram Temple," Tharit added.
He said the DSI would focus on finding out what caused the deaths, the types of weapons used, and who were behind the killings.
Asked whether DSI would be able to come up with clear answers, Tharit said, "We will work to the extent of our abilities".
Tharit urged people with information to contact DSI directly.
"We plan to use reports submitted by 11 police stations alongside circumstantial evidence and witnesses we can gather," he said.
He added that DSI would also summon military and police officers in charge of operations during the red-shirt rallies to provide information.
"We will summon the officers both at supervisory and operations level," Tharit said.