New York City police are investigating the death of a 64-year-old first responder who was found dead in an ambulette on Monday. 

EMS workers found Peter Forrest inside a Marquis Ambulette bus, parked on a side street in the Bronx in the Castle Hill Park neighborhood near Barrett Avenue, around 10:30 a.m Monday after someone called 911, the New York Police Department said. The ambulette had been abandoned in the area for some time, police said.

Forrest was found face down in a pool of blood on the floor of the ambulette, the New York Post reported.

Although his death is being investigated as a homicide, according to the NYPD, a medical examiner has yet to determine Forrest’s cause of death. 

The New York Police Department is investigating Forrest’s death as a homicide, the department said. (REUTERS/Brendan McDermid)

As of Wednesday morning, no arrests had been made in the private ambulance worker’s death. 

A representative for Marquis Ambulette confirmed that Forrest was an employee of the company, and that Marquis was cooperating with police on Wednesday morning, but declined to comment further.