A US state senator arrested in Hong Kong for bringing a gun into the city in his carry-on bag had his charge dismissed after he admitted to the “honest mistake.”

Jeff Wilson, a Republican from Longview, Washington, was released Monday after a Hong Kong court withdrew a gun-possession charge against him, Erik Smith, a spokesman for the senator, said in a statement. Wilson was freed on condition that he does not commit more firearms offenses in the Chinese city for two years and his unloaded revolver was confiscated, Smith said.