MIAMI (CBSMiami) — Firefighters say they know what caused a gas leak that sickened dozens in a South Florida business.READ MORE: Divers Mark 20th Anniversary Of Sinking Spiegel Grove Off Key Largo
Miami-Dade Fire officials said carbon monoxide was leaking from two bathroom drains on the first floor of the Lennar building in Sweetwater.READ MORE: Miami Man Is Florida's Newest Millionaire After Playing Lottery's 'Jackpot Triple Play'
The leak sickened employees in the building earlier Monday. Crews rushed seventeen people to the hospital and about 30 others were treated at the scene. Another 80 people went home not feeling well.
In total, the building houses about 400 employees.MORE NEWS: Narciso Torres Identified As Pilot Who Died In Haulover Bridge Plane Crash
The building, located at 700 N.W. 107th Avenue, will remain closed until the valves are fixed and inspected.