The incident ended with her being cautioned after voluntarily attending a police station in June. It is believed that the authorities were alerted by it and this is why she was detained five hours by the immigration officers in Los Angeles. The Smile singer arrived in L.A. on Sunday (5th August) to attend he MTV Video Music Awards nominations party on Tuesday.

Allen dismisses these speculations, saying that there is no link between the two incidents, but adds that she “has no idea” what provoked the revocation of her visa. "The authorities decided to revoke her American O-1 work visa. She has no idea why she was singled out for such treatment," stated Murray Chalmers, spokesman for EMI Music in London.

An O-1 visa can be received by a person with extraordinary abilities proven in fields like sciences, arts, education, business, athletics, or within the field of motion picture or television industry and it allows that person to temporarily work in the US.

Allen was bound to have US concerts in May and June, but canceled them due to her fatigue and her temporary inability to sing at her best. This time, though, she will fight to respect her gigs’ dates. "I am trying everything I can to sort this situation out," the singer said. "It is my intention to play my American dates in September. This depends on the authorities granting me a new work visa."

Her US fans are troubled by what happened and continuously express their support on her blog, including “this visa thing is ridiculous", "pathetic", and "that's our government for you. Sorry!".

Allen was nominated for the Best New Artist category, together with her UK colleague, Amy Winehouse.