Following outcries by many Facebook users, the National Council for Peace and Order promptly denied that it has a plan to block Thais' access to the most popular social network.
Col Sirichan Ngathong, deputy spokeswoman of the NCPO, said the junta assigned the online media monitoring committee of the Information and Communications Technology Ministry investigate why the services were inaccessible.
She said the committee found that technical glitch at a main gateway linking Thailand's Internet to Facebook servers abroad caused the services to be inaccessible in many parts of the country.
Sirichan said the ICT committee had held an urgent meeting with the Internet service providers and expected that services would resume before 5 pm.
The services resumed at around 4:40 pm.
NCPO deputy spokesman Col Winthai Sivari went on TV at 4:55 pm to announce that the technical error at the gateway was the cause of the problem.
Many people found out at about 3 pm that they could not access their Facebook pages, leading to speculation that the social network was blocked because it was used as a main medium to organise protests against the junta.