Officials Determine Deaths of Mother and Son

KPTM (OMAHA)- The deaths of a mother and son over a month ago have been ruled a murder suicide. The Douglas County Sheriff's Department says 18-year-old Cooper Flanagan killed his mother Maureen on July 16th in northwest Omaha by hitting her on the head with a hammer, which was confirmed by an autopsy.

Investigators also determined Cooper Flanagan died from carbon monoxide poisoning, they also found alcohol, marijuana and amphetamine in his system.

Autopsy results could not establish a time of death, however Maureen Flanagan was likely deceased days before her body was discovered. The investigation could not conclusively determine a motive for the homicide, however, in the months leading up to the homicide, several potential stress inducing events were identified, including: the death of Maureen Flanagan's father, her declining health, Cooper Flanagan's transition out of the home and into college, his arrest and court date for an MIP, careless driving, speeding and a knife as well as his drug use.