TORONTO - Police are investigating after a 23-year-old woman was sexually assaulted in her home north of Toronto by a man wearing a Halloween mask.

York Regional Police say the woman entered her Richmond Hill apartment yesterday afternoon when she was confronted by a man wearing a mask.

Police allege the man pushed her to the floor and dragged her to the bedroom, where he sexually assaulted her.

The attacker is described as being six feet tall and 180 pounds, wearing a blue hooded sweatshirt with orange writing on the front and dark pants.

Police are asking anyone with information to come forward and contact Crimestoppers or the York Regional Police sexual assault bureau.