A teenager from out of state drowned in an Oakland County lake over the weekend, officials said.

Officials said the city plans to use firefighting form to suppress the vapors found within the sanitary system. The industrial facility has taken measures, including inserting plugs into the onsite sewer system to prevent it from entering the system at a location north of Gibraltar Road at the Ford Flat Rock Assembly Plant property.

As of Friday morning, seven homes have been evacuated and hundreds of environmental safety investigators are in the area.

Federal and state hazardous materials teams from Downriver and western Wayne County went street-by-street and door-to-door Thursday in Flat Rock’s southeast neighborhoods.