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