UPDATE: Toronto Police say Hannah Batty has been located.

A 15-year-old girl is missing after attending a Toronto concert on July 4.

According to police, Hannah Batty was last seen at around 8 pm ET at the Vans Warped Tour -- an event that saw dozens of bands converge on Toronto's lakefront venue Ontario Place.

She has not returned home and her whereabouts are unknown.

Batty is described as white, five feet and five inches tall, 115 lbs., with brown eyes and long, dyed blue hair. She was wearing a black tank top, blue denim cut-off shorts and black Vans sneakers. She has stretchers in her earlobes.