WATERTOWN, Conn. (AP) — A Connecticut teenager armed with a hatchet severely wounded a girl he was obsessed with at her home and was arrested after fleeing the scene by jumping out of a second-story window, police said Thursday.

Police in Watertown responded to the home at about 4 p.m. Wednesday and found the victim with serious injuries to her head, legs and hands, apparently inflicted by an edged weapon, authorities said. She was taken to a hospital and is expected to survive, authorities said.

Police said at a news conference Thursday that the teenage boy appeared to be obsessed with the victim and the attack was not random.

A relative of the victim called 911 and another chased the suspect, who jumped out a second-story window and ran away, authorities said.

Police said the suspect was a 16-year-old Watertown boy, who told officers his location when they called him on the phone. He was charged with attempted murder, home invasion and other crimes. His name was not released because of juvenile offender laws.

Authorities said they found a hatchet, large kitchen knife, machete, duct tape and binoculars at the scene when they arrested the teen, who was detained pending juvenile court proceedings.