Special operations law enforcement have been called towards the Army War University in Dusit district, Bangkok, where one person has been shot deceased and another wounded.
The spokesman said the mentally ill sergeant had killed one person and wounded another and was threatening to kill ten people.
A man was documented to have been used into custody.
SM1 Yongyut Mangkornkim, 59, is arrested ahead of the Army Training Order in Dusit area, Bangkok, on Wednesday morning after capturing colleagues dead on the Army War College inside the command. (Photo supplied)