Four people have died as a result of a Legionnaires’ disease outbreak in Harlem that has sickened nearly 100 people, and officials revealed the cooling towers that tested positive for the bacteria that causes the illness — some of which are at properties owned by New York City,

A cooling tower at Harlem Hospital was among 12 sites tied to the city’s Legionnaires’ disease outbreak that’s now killed four people and sickened nearly 100, Department of Health officials

Three people in central Harlem have already died from legionnaires’ disease, according to the NYC Health Department.