Emergency crews investigating sludge along 22nd Street

A hazardous materials unit from Olathe is working to clean up sludge on Delaware Street in the 2200 block.

Lawrence-Douglas County Fire & Medical HAZMAT and other units were sent to the area to investigate the material shortly before 9 a.m.

A section of Delaware Street has been blocked off.

Lawrence fire officials have not returned repeated telephone calls made today from the Journal-World about the incident.