A Singapore Airlines flight attendant was found dead in a San Francisco hotel Tuesday, the airline confirmed.

Vanessa Yeap, 38, was found unresponsive in her room by the rest of her flight crew when she did not meet them in the hotel lobby ahead of a flight from SFO to Singapore. The Straits Times reports they attempted to revive her, but she was already deceased.

An anonymous cabin crew member told the Straits Times that Yeap said she was feeling unwell when the flight landed at SFO. Yeap, who was born in Penang, had been with the airline for 16 years.

"We can confirm with regret that one of our female cabin crew was found deceased in her hotel room in San Francisco on Feb 1, 2017 (Singapore time)," Singapore Airlines wrote in a statement. "Our immediate priority is to provide the necessary assistance to the family of the crew member. As the case is under the investigation of the local authorities, we are unable to share any further details.

"The member of crew operated to SFO on flight SQ2/28 January and was due to have operated out from SFO on SQ1/1 February."

SFPD confirmed they were aware of the incident and that the medical examiner's office is investigating Yeap's death.

Yeap's brother is reportedly flying to San Francisco to claim her body.