CHICAGO (CBS) — A teen was stabbed late Wednesday afternoon near the busy CTA Red-Brown-Purple Line Belmont stop.

Police surrounded the Chicago Transit Authority ‘L’ stop, over Belmont Avenue just east of Sheffield Avenue in Lakeview, at the height of the evening rush.

Around 5:45 p.m., two groups of boys or young men got into a quarrel that turned into a physical fight, police said.

One of them took out a knife and stabbed a 15-year-old boy in the thigh, police said.

The victim was rushed Lurie Children’s Hospital. His condition was stabilized.

Belmont Red Line Stabbing

A teen was stabbed at the Belmont Red, Brown, and Purple line CTA ‘L’ station on Wednesday, Nov. 20, 2019. (Credit: Jermont Terry/CBS 2)

Belmont Red Line Stabbing

A teen was stabbed at the Belmont Red, Brown, and Purple line CTA ‘L’ station on Wednesday, Nov. 20, 2019. (Credit: Jermont Terry/CBS 2)

Belmont Red Line Stabbing

A teen was stabbed at the Belmont Red, Brown, and Purple line CTA ‘L’ station on Wednesday, Nov. 20, 2019. (Credit: Jermont Terry/CBS 2)

Crime scene tape was strung in front of the secondary station entrance and exit on the north side of Belmont Avenue and a sculpture alongside it. Crime scene tape was also seen inside the entryway, though people were still exiting through a high-wheel turnstile nearby.

The stabbing did not affect CTA service, the agency said.