Thai Police today issued arrest warrants against two more suspects, including a woman, in connection with Thailand's worst attack at a Brahma temple that killed 20 people after a raid on an apartment uncovered possible bomb-making materials.
The sketches of the two suspects a male and a woman in a head scarf were released in a nationwide live telecast.
Police spokesman Prawut Thawornsiri said one arrest warrant was for a woman named Wanna Suansant, 26, who rented a room in Bangkok's Min Buri district.
Yesterday police found in Wanna's room urea-based fertiliser, a radio-controlled toy vehicle, components of which could be used to detonate a bomb remotely, bolts that could be used as shrapnel and decorative lights that could be used for ignition.
Items seized from the woman's apartment room were shown on the televised police briefing. The second arrest warrant was for an unidentified man of unknown nationality.
Prawut cautioned owners of apartments frequented by foreigners to keep a close watch on them and report anyone of similar appearance or who was found behaving in a suspicious manner.
The two new arrest warrants raised to four the number of people now wanted for involvement in the Erawan shrine bombing on August 17 that killed 20 people and injured 131 and a bomb explosion at Sathorn pier the next day.
One foreigner whose identity and nationality is still not been confirmed was arrested with bomb making materials at an apartment in eastern Bangkok on Saturday.
Meanwhile, Thai police said it will reward the investigative team that helped find a suspect on Saturday with a cash bounty that had been offered to the public.
The suspect apprehended on Saturday with forged passports and bomb making materials is till being interrogated. Yesterday, Prawuth said that that the interrogation was proceeding slowly.