The Boston Licensing Board on Thursday revoked Pho So 1's food-serving and beer-and-wine licenses after its fifth citation in seven months for staying open well past its licensed closing time of 10 p.m.

The revocation of both licenses for the pho restaurant at 223 Adams St. came after a hearing on Tuesday at which owner Hoang Anh Nguyen acknowledged staying open too late on Feb. 8 - but at which both he and a loyal customer said that this time he really got it and would never do it again.

At the hearing, board Chairwoman Christine Pulgini said Nguyen had made a similar claim after the second time detectives found the restaurant open after hours and that she had been finding the claim harder to believe as the restaurant kept appearing before the board.