Toronto police are asking for the public’s help identifying a woman who allegedly threw a chemical on a three-year-old boy at a Bloor West area movie theatre on Halloween.

The child and his father were buying movie tickets at the Humber Cinemas theatre, in Bloor West Village, Saturday afternoon when the suspect approached the boy and allegedly sprayed him with an unknown burning substance.

Police said the woman then left the theatre and was last seen walking eastbound on Bloor.

Please retweet to help police ID woman suspected of throwing chemical on child at movie cinema in Toronto ^sm pic.twitter.com/tt7vqTmYkx — Toronto Police (@TorontoPolice) November 3, 2015

The child was taken to hospital with minor burns to his neck and ears.

The woman has been described as black and middle-aged. She was last seen wearing a purple dress, black shoes, black coat with writing on the back, brown scarf and a brown hat.

Police said she was holding a FRESHCO reusable shopping bag.

Authorities are asking anyone who may know the woman’s identity to contact police.