"Our security forces and agencies have already stepped up their activities and security arrangements. But if any attack occurs, I think we have to make sure that we hold together," Ng was quoted as saying by the Today newspaper.
He also called on citizens to be vigilant as "no country is immune [to violent attacks]."
On Thursday and early Friday, two series of blasts shook Hua Hin resort in southern Thailand, killing at least two people and injuring 28 others. Two other blasts occurred in the southern Thai city of Surat Thani, and two more struck Phuket Island on Friday during a celebration of Thai Queen Sirikit's birthday. Two more blasts were reported in Thailand’s Phang Nga Province.