Chicago police early Friday issued an alert warning commuters about thefts at a Chicago Transit Authority station in the Uptown neighborhood on the North Side.
The alert said there have been three recent incidents in which someone grabbed a cellphone from the owner's hand and ran off the train.
The thefts occurred at about 2:15 a.m. on Dec. 28, at about 10:45 p.m. on Jan. 9, and at about 11:25 p.m. on Jan. 14.
In the Dec. 28 incident, the thief was described as a black man between 18 and 25 years old. He was wearing a gray sweatshirt with the "American Eagle" brand logo over a blue hooded sweatshirt and camouflage pants.
Anyone with information on the thefts should contact Area North detectives at 312-744-8263.