CHICAGO (CBS)– Two men were beaten and robbed on the Lake Street CTA Red Line platform.

Officers said the group of attackers was made up of six to 10 young people, possibly teens. There were both boys and girls in the group, police said.

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One of their victims was a 61-year-old man heading north on a Red Line train around 11:40 p.m. Sunday.

Police said the 61-year-old got off the train at State and Lake streets when the group of young people began harassing him.

The victim said two of the young men followed him onto the train platform and pushed him into some of a young women that were with them.

Then the entire group attacked, punching the 61-year-old repeatedly and stealing his bag.

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A 21-year-old man saw this happening and tried to help, but the group beat him up, too, and stole his cell phone.

The attackers ran off.

The victims were taken to Northwestern Memorial Hospital with cuts to their faces.

No one is in custody.

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The Chicago Transit Authority is working with the Chicago Police Department to review surveillance camera footage in hopes of identifying the attackers.