Malaysia on Wednesday detained an Iranian man suspected of involving in the series of bomb attacks in Bangkok's Klongtan district on Tuesday, a senior Thai security official said.
The arrest of Masoud Sedaghatzadeh was made about 3pm in Kuala Lumpur following the Thai side giving information and identity of the suspect.
The suspect was scheduled to board a flight from the Malaysian capital to Tehran, capital of Iran today. He initially booked a flight to leave for Tehran on February 25.
The three bomb attacks hit Klongtan, causing panic in the capital and leaving five bystanders injured.
At first the Thai side could not identify the suspect, allowing him to slip through Thai immigration on Tuesday and leave for Malaysia
Earlier Deputy police chief Pol Gen Pansiri Prapawat said Sedaghatzadeh, left Bangkok for Kuala Lumpur on Tuesday afternoon.
He was one of the four Iranian police linked to the explosions. The fourth Iranian still unaccounted for was a female Iranian who rented the house for the suspects.
The two others Iranians allegedly involved in the blasts are in police custody. One of them, Saeid Moradi, was badly injured after an explosive he intended to throw at police accidentally fell to the ground, while Mohammad Hazaei was later arrested at Suvarnabhumi Airport as he reportedly tried to escape to Malaysia.
The three rented a house in Soi Pridi Panomyong in the district about a month ago.
A police search of the house uncovered a number of electronic devices that could be used to make explosives.
It is currently believed that the three tried to flee from the rented house after the first bomb exploded inside. Sedaghatzadeh and Hazaei managed to flee but Moradi could not after a taxi refused to pick him up. He threw an explosive at the taxi and later at police.