The Oakland County Sheriff's Office is investigating after a woman was found dead inside a home at a mobile home park in Springfield Township, Michigan Tuesday morning.
The Oakland County Sheriff's Office reported that it believes the 15-year-old grandson of the victim is the suspect. Officials reported they believe that the grandson committed suicide after the incident.
Deputies said they received a 911 call at 5:42 a.m. local time saying that they found the woman stabbed to death. The caller also said that her son left a note saying he was going to kill his grandmother.
They found the woman with multiple stab wounds and also found the suspected murder weapon, a large kitchen knife, at the scene.
According to the Sheriff's Office, the 15-year-old tried to commit suicide last weekend and was in the hospital until yesterday. After he got out, he wrote a threatening note that he was going to kill his grandmother last night.
He allegedly rode his bike over to her house, stabbed her several times and drove off in her car. By late Tuesday morning, he was said to have sat in front of a freight train. The collision killed the suspect.
His father Dave declined to comment saying the family is still trying to come to grips with the pain.
The grandmother was identified by family and friends as 65-year-old Mary Ann Barnes who lived alone in a mobile home in Oakhill Estates.
The suspect would have been going into the 10th grade this fall.