The mother and grandmother of a teen found dead of a heroin overdose, and another woman, have pled guilty in his death.

The Summit County Prosecutor's Office says 32 year-old Heather Frye, 52 year-old Brenda Frye and a family friend, 35 year-old Jessica Irons, pled guilty to involuntary manslaughter charges.

16 year-old Andrew Frye was found dead in a Green hotel room in April after injecting heroin.

Investigators say Frye's mother, grandmother and Irons were all in the hotel room before Andrew died.

They say the heroin came from Brenda Frye's boyfriend, Donald Callaghan...who faces a heroin possession charge in a trial scheduled for September 12th.

Heather and Brenda Frye, and Jessica Irons, are set for sentencing on October 12th.

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(Summit County Prosecutor's Office, news release) Summit County Prosecutor Sherri Bevan Walsh announced today that Heather Frye, Brenda Frye, and Jessica Irons pled guilty in connection with the heroin death of Heather's 16-year-old son Andrew.

Heather Frye, 32, of Andrus Street in Akron, pled guilty to the following charges:

Involuntary Manslaughter – a felony of the 1st degree
Endangering Children – a felony of the 3rd degree
Tampering with Evidence – a felony of the 3rd degree

Brenda Frye, 52, of Neville Avenue in Akron, pled guilty to the following charges:

Involuntary Manslaughter – a felony of the 1st degree
Trafficking in Heroin – a felony of the 4th degree

Jessica Irons, 35, of Merria Road in Stow, pled guilty to the following charges:

Involuntary Manslaughter – a felony of the 3rd degree
Tampering with Evidence – a felony of the 3rd degree

On April 6, 2016, 16-year-old Andrew Frye was found dead at a hotel room in Green, Ohio. The Summit County Medical Examiner determined the teen died from injecting heroin. Investigators discovered Frye's mother Heather, her friend Jessica Irons, and Heather Frye's mother Brenda Frye (Andrew's Grandmother) were all in the hotel room prior to Andrew's death. As part of their investigation, Summit County Sheriff's Deputies discovered the heroin Andrew used was obtained by Brenda Frye from her boyfriend Donald Callaghan. Brenda sold the heroin to Andrew's mother Heather while Andrew was present.

Summit County Common Pleas Court Judge Lynne Callahan is scheduled to sentence all three defendants on October 12, 2016 at 1pm.

The fourth defendant charged in the case, Donald Callaghan, is scheduled to go on trial on one count of possession of heroin on Monday, September 12, 2016 in front of Judge Callahan.