The suspects, including a Pakistani and two Malaysians—were detained, Malaysia inspector general of police Khalid Abu Bakar said.
He added, “We are helping the Thai police in the investigation. We feel these three can assist us in the probe. We will not hand over the suspects to the Thai police now.”
“Let us investigate the matter first,” he added.
Thai police had arrested two suspects in regard to the twin bombings. One of them, Mieraili Yusufu, identified the alleged mastermind as Abdulrahman, alias Izan.
Izan had left Thailand on a Bangladesh-bound flight on August 16, a day before the bombing.
Thai police had sought help from Bangladesh through Interpol to help locate Izan following probe that the Chinese man may have fled there.
Mystery still surrounds the group who were behind the bombing in the heart of Bangkok.