The leader of Britain's far-right English Defense League party has been jailed after pleading guilty to using someone else's passport to enter the United States.

Stephen Lennon — whose criminal convictions previously had led to his being denied entry to the U.S. — used a passport in the name of Andrew McMaster to board a Virgin Atlantic Flight from London to New York on Sept. 10.

The 30-year-old somehow managed to leave the airport and enter the U.S., staying one night before returning to the U.K. on his own passport. He was arrested in October.

His true identity was discovered when customs officials took his fingerprints.

Judge Alistair McCreath noted Lennon's tendency to use aliases in sentencing the EDL leader on Monday to 10 months in jail.