One person has died in connection with the Legionnaires’ disease outbreak on the Upper East Side, health officials announced Friday evening.

“I am saddened to report that one person has died in connection with the Legionnaires’ disease community cluster on the Upper East Side. My deepest condolences are with their loved ones, and out of respect to their personal privacy, we will not be releasing any additional information on the individual,” the city’s Health Commissioner Dr. Alister Martin wrote in a statement.

As of 9 p.m. Thursday, there were 67 confirmed cases in the outbreak and 12 people remain hospitalized, city officials said.

The city said Friday that all 76 buildings that were ordered to clean and disinfect cooling towers have completed that work.

City Council Speaker Julie Menin, whose district includes the impacted region, called the death “heartbreaking.”

“As this outbreak continues to impact our community, we must remain focused on the health and safety of our neighbors,” she wrote in a statement.

Legionnaires’ disease is a form of pneumonia caused by Legionella bacteria, which grow in warm water and can spread in building cooling systems, hot tubs and showerheads. In many cases, people contract the disease by inhaling tiny droplets of contaminated water. The disease does not spread person-to-person.

The illness is treatable, but it is fatal in about 10% of cases, according to the U.S. Centers for Disease Control and Prevention.

Seven people died and more than 100 others were sickened during an outbreak last year in Harlem. The sources turned out to include cooling towers — devices sometimes used for cooling large buildings — at a city-run hospital.