206 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.
⚠️ Warning: Viewer Discretion Advised ⚠️ The following section contains detailed information about mass murderers, their crimes, and case details. Some content may be disturbing or graphic, including descriptions of violence, criminal behavior, and sensitive subject matter.
Description
See any errors? Let us know!

Emile Pierre Benoist: Hackettstown–Mansfield mass murders, August 26, 1977

Overview

On August 26, 1977, 20-year-old Emile (Emil) Pierre Benoist carried out a two-hour ambush shooting along a railroad right-of-way straddling Hackettstown and neighboring Mansfield Township in Warren County, New Jersey. Armed with a .44-caliber semi-automatic rifle fitted with a telescopic sight, he shot people he encountered on foot, bicycles, and motorcycles, killing six before taking his own life as police closed in. Contemporary reports identified him as a former U.S. Marine and the son of a former Hackettstown councilman.

The rampage

Witness accounts and police briefings from the night and following day describe Benoist lying in wait along a seldom-used spur line, stepping from cover to fire on passersby, then moving south from Hackettstown into Mansfield Township. He fired at a passing motorist and a responding police car without injuring occupants, concealed some bodies near an abandoned tannery—apparently to avoid early detection—and attempted to use a victim’s motorcycle to chase others before fleeing on foot into cornfields. He died by suicide as officers approached.

Weapon and method

Multiple outlets reported that Benoist used a .44-caliber Ruger-type semi-automatic rifle with a scope, selecting targets at random from ambush positions along the tracks. ...Read More
Killer's Details

Benoist

Emile Pierre

8/26/1977

5:36 PM

214

9:10 PM

210

Mountain Ave

Hackettstown

NJ

Warren County

7840

40.840175

-74.825526

Railroad tracks

20

3

1

Yes

1 Firearm

NA

08/13/2025


Location: