the dog.

A representative for Blair said the actress  experienced a medical emergency that led to the alleged conduct.  She  received immediate medical attention  after landing and was recovering at the hospital, the rep said, without providing further details regarding the medical episode. Blair revealed in 2018 that she had been diagnosed with multiple sclerosis.

The FBI was investigating the incident, and confirmed to NBC News it had been contacted about a  potential assault aboard a flight that arrived into JFK.  The bureau told NBC News  as per long-standing DOJ policy, we do not comment on ongoing investigations. 

The Federal Aviation Administration also said it would investigate a  passenger disturbance  on the flight.

In a response to a request for comment from NBC News on Monday, Delta did not identify Blair as the passenger, but said it has  zero tolerance for unruly or unlawful behavior, as the safety of our customers and crew always comes first. 

Jay Blackman, Sofia Sutter and Doha Madani of NBC News contributed to this report.