CHICAGO (CBS) — Police quickly caught a 15-year-old boy, after he and an accomplice allegedly stole an iPad from a man on a CTA Brown Line ‘L’ train.

The robbery happened about 8:45 a.m. at the Montrose station in the Ravenswood neighborhood, according to police News Affairs Officer Laura Kubiak. A man in his 20s on an inbound train was jumped by two males who tried to take his iPad.

The man apparently did not give up the device easily, as the robbers struggled with him for the device. The two eventually got the iPad from the victim and ran off, Kubiak said.

A Chicago Sun-Times employee on a Brown Line train at the time noticed a scuffle on the platform involving several people, and said the train was delayed for a few minutes after the incident.

Details on the robbery and a description of the offenders went out over police radio, Kubiak said. One of the responding police units saw someone matching one of the suspect descriptions and arrested the 15-year-old at 4219 N. Ravenswood Ave., just a couple of blocks from the site of the robbery.

The 15-year-old was taken back to the Brown Line platform, where he was positively identified by the victim and witnesses, Kubiak said.

Though the victim was punched in the face during the attack and suffered visible bruising and swelling, he was not taken to a hospital, Kubiak said.

As of about 1 p.m., the iPad had not been recovered, the second robber was still at large, and no charges had been filed against the 15-year-old, she said.

The Chicago Transit Authority did not mention any changes in service resulting from the robbery and subsequent police activity.

The Sun-Times Media Wire contributed to this report.