The upper house of Russian parliament on Wednesday ratified a treaty with North Korea envisioning mutual military assistance, a move that comes as the U.S. has confirmed the deployment of 10,000 North Korean troops to Russia.

The threats, which were deemed to be non-credible, caused two polling locations in Fulton County, Georgia, to be evacuated. Both re-opened after about 30 minutes, officials said, and the county is seeking a court order to extend the location's voting hours past the statewide 7 p.m. deadline.