Bike-a-bee's Jana Kinsman was attacked last night by four men in a purple Chevy Tahoe while she was riding north on Kimball, grabbing her bag and dragging her until she hit a parked car.

Kinsman sustained significant injuries to her arm, although no broken bones. She was told by police that they are considering the case a hit and run. If you have any information that would be helpful to the investigation, call 311 or text the tips line at CRIMES (274637) and reference case number HW415248, on Beat 1412.

Additional reporting: Chicagoist, DNAinfo.

UPDATE: DNAinfo has surveillance video footage of people coming to the aid of Kinsman after she crashed into a parked car. A GiveForward fundraiser has been established to help Kinsman with medical expenses. As of 1pm on Aug. 21, it has collected more than $4,000.

Here's a Storify by one of Kinsman's friends, collecting her tweets about the attack.