Metropolitan Police Bureau commissioner Pol Lt-General Sriwara Rangsiprammanakul submitted two investigation reports along with 3,000 pages of documents to the Office of the Attorney-General, seeking action from public prosecutors.
The suspects include motorcyclist Mahahin Khunthong, 34; grenade thrower Yuthana Yenpinyo, 34; and Supaporn Mit-arak, 49, the alleged mastermind of the attack.
Supaporn’s son, who is still at large, is also wanted on 10 other charges such as terrorism, racketeering, premeditated murder, harming others and their property, attempting to kill officials, resisting arrest, possessing bullets and guns without permission.
Pibul Chatupattanakul, deputy secretary to the Attorney-General, said he would seek the Attorney-General’s final decision on whether the accused should be indicted.
He was confident that the decision would be made before the suspects’ detention period runs out in 24 days.
Sriwara said the case had two investigation files, because one file came under Phaholyothin Police jurisdiction and the other was under Chok Chai Police jurisdiction.
Four of the 20 suspects are still at large and one is a minor. Those who may have escaped overseas would also be sought – police will ask Attorney-General Trakul Winitnaiyapak to ensure the suspects are extradited.
He voiced confidence that prosecutors would indict the suspects because the case was strong. Prosecutors had joined the investigation and also believed that there were no holes in the case.