A 21-year-old woman was grabbed by a person and stabbed repeatedly Tuesday night while walking to the Fullerton CTA Red Line station in the Sheffield Neighbors neighborhood on the North Side.

At 10:53 p.m., the woman was walking east toward the station in the 1200 block of West Webster when the unknown male suspect grabbed her by the neck from behind, Chicago Police said. The suspect then stabbed her multiple times in the neck and back.

The woman was taken to Illinois Masonic Medical Center in serious condition, police said.

She was not aware that she was being followed prior to the attack, police said. The suspected attacker did not speak to her during the incident

On Saturday night, police released surveillance footage of the suspect. He was seen in the footage parking a dark blue or black Cadillac SRX on Wayne Street prior to the attack. After the incident, he was seen getting back into the SRX and driving off north.

The suspect was described as standing 5-foot-9 and wearing a black hooded sweatshirt and black baggy pants, police said.

Near North District officers were increasing patrols in the area at 43rd Ward Ald. Michele Smith’s request.

Anyone with information or with surveillance footage of the attack is asked to contact Area Central detectives (312) 747-8380.