Police warn of attacks in Loop

July 6, 2012 4:40:49 AM PDT
There was an alert Friday morning about a string of robberies in the Chicago Loop.

There have been at least four attacks in the past few weeks.

All happened either late at night or in the early morning hours.

Police say victims were approached from behind while walking and had their property taken by force.

The suspect descriptions vary but are generally described as men in their late teens to early twenties.