Massachusetts State Police Trooper Michael Proctor has been suspended without pay since July. A hearing Wednesday could determine his fate.

After the closed hearing, the State Police Trial Board will make disciplinary recommendations to Colonel Geoffrey D. Noble, the head of the State Police, officials have said.

Calling it “an unattended death” aboard the flight, Massachusetts State Police said someone called the Crime Scene Services Section about the death.

A person’s death on board an Air France plane to Boston from Paris was under investigation on Tuesday evening, Massachusetts State Police said. There were few details available about the person’s death;