Former New York City Mayor Rudy Giuliani and longtime Donald Trump ally Rudy Giuliani has been hospitalized with pneumonia at a Florida hospital and remains in “critical but stable condition,” according to his spokesperson Ted Goodman.

Goodman said the 81-year-old former mayor is being monitored as a “precautionary measure,” as per the Independent.

Giuliani, who served his term during the September 11 terror attacks, “ran toward the towers to help those in need, which later led to a diagnosis of restrictive airway disease,” Goodman wrote.

“This condition adds complications to any respiratory illness, and the virus quickly overwhelmed his body, requiring mechanical ventilation to maintain adequate oxygen and stabilize his condition,” he added.

Giuliani is “now breathing on his own, with his family and primary medical provider at his side,” Goodman said.