Story highlights Police spokesman: Man is not chief suspect but is thought to be part of network behind two blasts

The man was initially thought to be Turkish, police say, but his two Turkish passports are fake

The suspect was arrested at an apartment in a Bangkok suburb, Lt. Gen. Prawut Thavornsiri says

Bangkok, Thailand (CNN) Thai police have arrested a suspect in a bombing that killed 20 people and wounded scores more at a shrine in Bangkok this month, authorities said Saturday.

The man, also suspected of involvement in a second blast a day later in Bangkok, was arrested at an apartment in a suburb of Bangkok, police spokesman Lt. Gen. Prawut Thavornsiri said.

However, he is not the man in a yellow T-shirt and dark-framed glasses who was identified from surveillance video as the chief suspect in the bombing, Prawut said.

"The man we have is not the man in the sketch, but we believe he is part of the network which carried out the two bomb incidents," he said.

Prawut initially said the suspect arrested Saturday was a Turkish national. But he subsequently told CNN: "At first we thought he is Turkish. But we just found out two Turkish passports he is holding are all fake.

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