Lt Gen Paradorn was referring to the attack on a People's Democratic Reform Council (PDRC) gathering in Khao Saming district of Trat province on Saturday night, and the explosion in front of the Big C department store at Ratchaprasong and the discovery of an M79 grenade near the Civil Court on Ratchadapisek road on Sunday.
The incidents were linked and intended to expand the unrest to other provinces and lay blame on the government, he said.
The NSC chief said the authorities a full investigation was underway into the use of war weapons in the incidents. He said it was believed the armaments handled by people with expertise in this field.
It was not necessary to impose the emergency decree in Khao Saming district of Trat province, he said. The situation could still be handled with ordinary laws.
On a report that Gen Panlop Pinmanee, an adviser to the prime minister, would be appointed to the Centre for Maintaining Peace and Order (CMPO), Lt Gen Paradorn said this had not been raised for consideration.
Meanwhile, Gen Prayuth Chan-ocha, the army chief, reportedly cancelled his trip today to review a ceremony to mark the establishment of the Special Warfare Command in Lop Buri.
Gen Udomdej Sitabut, the deputy army chief, was assigned to attend the ceremony on his behalf.
Gen Prayuth remained at the 2nd Cavalry Division headquarters to follow the situation after a spade of attacks on PDRC protesters in Trat on Saturday and at Big C department store at Ratchaprasong on Sunday.