A key suspect in the Bangkok bombing has fled to Turkey, say police in Thailand.
Earlier on Monday, two men and a woman were detained in Malaysia in connection with last month's bomb blast which killed 20 and injured more than 120..
Thai police have released CCTV images of two new suspects in the Bangkok bombing.
Officials said the two men, one dressed in red and another in white, were seen milling around the first suspect, who wore a yellow t-shirt.
Police said the two men appeared to be shielding the man in yellow from the view of the crowd as he placed a black rucksack in front of a railing.
A Thai TV station apologises after dressing up a member of staff as the Bangkok bombing suspect and sending him to the scene of the blast.
Friends have paid tribute to a London law student who was killed in Monday's bomb blast in Bangkok.
Grieving family and friends of the victims of a devastating bomb attack in Bangkok have left flowers and messages at the site of the blast.