Airport Director Pratueng Sornkham said more police officers were called in to guard the facility from 11am this morning.
Stricter security procedures are now in operation and will remain so until the situation changes, he said.
He had no specific intelligence indicating a threat, he said.
Join the conversation and have your say on Thailand news published on The Thaiger.
Thaiger Talk is our new Thaiger Community where you can join the discussion on everything happening in Thailand right now.
Please note that articles are not posted to the forum instantly and can take up to 20 min before being visible. Click for more information and the Thaiger Talk Guidelines.