Man Found Dead Inside Car on Arsenal Street; Hazmat Teams Called-in When Note Warned of Poison

A man was found dead inside a car on Arsenal Street this evening and authorities are saying the death was an apparent suicide.

According to Watertown Police Lt. Michael Lawn, a couple walking their dog near the parking lot of 480 Arsenal St. spotted the silver Honda Accord and called in a suspicious vehicle to police.  Saturday.

When police arrived on scene, Lawn said they found notes on the front driver- and passenger-side windows stating "poison used, stay away." The note also mentioned the poison used, "H2S" (hydrogen sulfide), as well as instructions to call hazmat teams. 

The notes prompted the police to call in hazmat teams including those from the state Department of Fire Services (District Two), Waltham Fire Department and Reading Fire Department. Reading and Waltham helped provide the decontamination equipment. 

State Police bomb squad also responded to the scene.

Lawn said the man found inside the vehicle is not believed to have any affiliation with the building adjacent to the parking lot, which houses a pharmaceutical company. 

The building and premises was searched, however, no one was found inside so evacuation was not necessary. 

The man has not been identified, Lawn said, pending notification of next of kin. Authorities will continue to investigate the death, Lawn said, and there is no information thus far as to how the man got a hold of the chemical. 

Stephen Walsh contributed to this report.