Police investigating whether Ivana Trump fell down the stairs before she died, reports say

• Donald Trump's first wife died on Thursday aged 73. Her cause of death remains unknown.
• Police are investigating if Ivana Trump fell down the stairs before her death, NYT and ABC reported.

New York City police are investigating whether Ivana Trump fell down the stairs before she died, according to multiple reports.

Ivana Trump, the first wife of former President Donald Trump, died on Thursday at age 73, her family said.

A cause of death has not been announced.

The New York City Police Department is investigating if Ivana Trump fell down the stairs of her apartment in New York's Upper East Side, The New York Times reported, citing two unnamed law-enforcement officials with knowledge of the matter.

ABC News reported, citing unnamed police resources, that Trump was found unconscious and unresponsive at the bottom of stairs in her apartment and that police are investigating whether she had fallen down the stairs.

ABC News also reported that paramedics responded to a report of a cardiac arrest in her apartment on Thursday and found a 73-year-old woman, who was then declared dead at the scene.

There were no signs of entry into Trump's home, one of the officials told The Times.

An NYPD spokesman told Insider that the police were waiting on the medical examiner to confirm how she died.

Ivana Trump had three children with the former president: Donald Trump Jr., Ivanka Trump, and Eric Trump.