At least 6 transported to hospital after Level 2 hazmat at building in Loop

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

CHICAGO — Fire crews are at the scene of a Level 2 Hazmat at an office building in the Loop.

A chlorine leak was reported on the roof of a building located at 77 W. Wacker, just after 10 a.m. Friday.

The Hazmat was quickly upgraded to a Level 2.

The Chicago Fire Department reports at least six people have been transported to Northwestern Hospital. One person refused.

This is a developing story. Check back for details.