Lily Allen is at the center of an investigation into allegations she flouted a smoking ban during a concert in Liverpool, England.

The Smile hitmaker performed at the Echo Arena on Wednesday, and a local newspaper subsequently reported she had been seen lighting up cigarettes during the show.

Local authorities are now investigating the incident and liaising with the venue to establish whether Allen’s behavior contravened the U.K.’s ban on smoking in indoor public places.

If officials rule the star did smoke onstage, she and the owners of the venue could face a fine.

Source, Bauer-Griffin