A woman died on a flight on Tuesday. The female passenger was pronounced dead shortly after the flight from Puerto Rico landed in Miami.

According to Miami-Dade police spokesman Alvaro Zabaleta, a 77-year-old woman who was on American Airlines flight 1254 from San Juan was pronounced dead at 10:12 a.m., after the plane had landed at Miami International Airport, Local 10 reports.

Passengers and police members who spoke to Local 10 say the woman was sitting in the back of the plane with a man who is thought to be the woman's son-in-law. The problems seemed to begin on board as the pilot notified the passengers about a medical emergency on board about an hour into the flight.

Several passengers said that flight attendants and paramedics tries to assist the woman, but they weren't able to save her.
Homicide detectives arrived at the airport to investigate, but there is no foul play suspected.

The name of the woman has not been released as police are trying to identify and notify the woman's family.

This isn't the first time a passenger died while on a flight. In-flight deaths tend to be pretty common. Back in December, an 81-year-old man died on an Allegiant Air flight to Arizona. Earlier that month, a 16-year-old boy suddenly died on a Delta flight to Atlanta, causing the flight to divert to Washington. In November, an 82-year-old man died on an Asiana Airlines flight to Chicago. In September, a Nigerian man died on  a United Airlines flight to Houston.