A flight attendant was found dead with a cloth in her mouth Monday inside a hotel room in Philadelphia, authorities said. 

The 66-year-old woman was found in a room in the Philadelphia Airport Marriott hotel just before 11 p.m., the Philadelphia Police Department told Fox News Digital. 

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The unidentified woman was found unresponsive. She was pronounced dead by first responders at the scene at around 10: 40 p.m. and her body was taken to the Medical Examiner's Office.

The front of the Philadelphia Airport Marriott hotel where a flight attendant was found dead Monday

A flight attendant was found dead Monday at the Philadelphia Airport Marriott hotel with a cloth in her mouth, authorities said.  (Google Maps)

Philadelphia Police Chief Inspector Scott Small called the death "suspicious" and said the woman was on several medications, according to local reports. 

No arrests were made, and no weapons were recovered. Homicide detectives are investigating the death, police said. 

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"We are devastated by this news," an American Airlines statement to Fox News Digital states. "Our thoughts are with the family and colleagues, and we're doing everything we can to ensure all affected have the support they need during this difficult time. We will continue to cooperate fully with local law enforcement in their investigation."

Other local reports said Marriott referred questions about the incident to the police.