UPDATED 07/16/12 2:11 p.m.

CHICAGO (CBS) — Police are investigating multiple reports of a smell of natural gas in and around the Lincoln Park neighborhood.

The natural gas odor has been detected in the 1900 block of North Clybourn Avenue – near the junction with Racine Avenue and Cortland Street, as well as in the 1000 block of West Armitage Avenue – just west of Sheffield Avenue and the busy Armitage Brown-Purple Line ‘L’ stop.

A school in the 1100 block of West Armitage Avenue had to be evacuated because of the gas odor. The Goddard School, a preschool program, is located at 1124 W. Armitage Ave.

The gas smell was also detected several blocks farther east, in the 500 block of West Belden Avenue between Geneva Terrace and Cleveland Avenue.

In all, there were seven locations where the gas smell was found.

Fire Department crews are investigating to determine the source.