Firefighters say an issue with a furnace lead to smoke showing from the Cytec Solvay Group building off Revolution Street in Havre de Grace, Md. A tweet from first responders said that smoke was showing from the building around 7 p.m. Sunday. A hazmat crew was also called to the scene as the New Jersey-base Cytec Solvay is a sustainable chemical company. The Susquehanna Hose Fire Company tweeted asking that residents avoid the area Sunday evening. An hour later they say crews were picking up an clearing the scene.