A security threat halted a vote on net neutrality rules moments before commissioners were set to vote on the change.

FCC chairman Ajit Pai was giving his remarks on net neutrality and the vote was expected to happen any moment. Commissioners and visitors were escorted from the room and were told to leave belongings behind.

A live feed of the event quickly switched to a splash screen after Pai said security was forcing them into recess.

The commissioners returned to the room after the quick disruption. The cause of the scare is unknown.