DERRY, N.H. - A 39-year-old man killed his son and took his own life at a home in Derry, investigators announced Tuesday afternoon.
The New Hampshire Attorney General began the investigation after calling the deaths of Matthew Edmunds and 6-year-old Preston Connor Edmunds untimely.
Police in Derry were called to 30 Kendal Pond Rd. just after noon Monday to check on the welfare of the pair.
DERRY, NH: 6y/o Preston Connor's was killed in a murder suicide. Father and son were found dead. Authorities say, Dad killed his son using charcoal grills. The bedroom was filled with "dangerous carbon monoxide levels". pic.twitter.com/NKDBM0dM3Y— Malini Basu (@WFXTMalini) February 14, 2018
Officers had to force their way into the mobile home where they discovered the bodies in a locked bedroom.
According to police, the room had been sealed from the inside using duct tape and a blanket. Police say they found two charcoal grills in the room containing burned charcoal and ash.
“Father didn’t take him out much. He didn’t do a lot. If he did, it wasn’t like the normal kid that would go sliding,” Preston’s uncle Neil Desjardins said.
A sign hanging from the ceiling fan "warned police officers that they 'will find me and my son' in the bedroom and to be aware of 'dangerous carbon monoxide levels.'"
A neighbor just placed this note and stuffed animal outside the home in Derry, NH, where the bodies of a 6-year-old and his father were found yesterday. Investigation continues today. #Boston25 pic.twitter.com/EGN1o36JJV— Michael Henrich (@MichaelHenrich) February 13, 2018
The Attorney General’s Office said autopsies determined both died from carbon monoxide poisoning and the manner of death was murder/suicide.
Derry officials said Tuesday that Preston lived with his father per a custody arrangement, but Preston was not enrolled in school.
Matthew had also deleted his Facebook account shortly before the murder/suicide.
In 2009, the family's 6-year-old son Connor Matthew Edmunds died in a pool accident. Family friends say Preston's middle name is in honor of his older brother.
Investigators say they are looking into whether the deaths are connected.
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