Hannah Batty Missing Police are asking concert goers to check their crowd photos to see if they spot Hannah Batty, a 15-year-old who went missing after the Vans Warped Tour show in Toronto, Ontario. Photo: Toronto Police Service

Ontario police are asking concertgoers to check their crowd photos to see if they spot Hannah Batty, a 15-year-old girl who went missing last week after the Vans Warped Tour show in Toronto.

Batty was last seen around 8 p.m. on July 4 at the festival at The Flats at Molson Amphitheatre on the Ontario Place grounds, according to authorities.

Toronto police described Batty as white, 5-feet-5, 115 pounds, with brown eyes and long, dyed blue hair and stretchers in her ears. She was wearing a black tank top, blue denim cut-off shorts and black Vans sneakers when she was last seen.

Detective Constable Paraskevopulos told Billboard Batty was not with her friends when she went missing and police have already checked Lake Ontario, which is near the venue. Authorities say they are worried about her safety.

“All that stuff has been taken care of,” she told Billboard. “It is a public park area so the cameras are being checked into by 14 Division.”

Paraskevopulos also said police have received tons of tips about girls with blue hair. “People don’t realize how popular blue hair is,” she said.

Authorities are urging anyone with information to contact police at 416-808-2200 or Crime Stoppers. There’s also an option to Leave A Tip on Facebook.

Reddit users have already begun helping with the search, with one user posting what is reportedly the last image Batty took. Other Twitter users are using the hash tag #FindHannah, but some say the teen has gone missing on purpose before this incident.

“This #findhannah s**t is stupid. We all know her as the type of bitch to crave attention. She wanted to get noticed by her fave artists,” Twitter user moon pie wrote. “I can't stand when people fake their own disappearance.”