Earlier in the day, Jordan said it was expelling the Syrian ambassador in the kingdom and giving him 24 hours to leave the country for breaching diplomatic norms.
A foreign ministry statement said Ambassador Bahjat Suleiman, a former general and intelligence chief, had violated diplomatic protocol by posting repeated comments on social media that criticized Jordan.
The Western-backed kingdom has harbored more than one million refugees from neighboring Syria's civil war, where rebels are fighting to oust President Bashar al-Assad.