Plano teen who fatally stabbed mom, brother was not intoxicated, autopsy finds — (Dallas Morning News)

SSRI Ed note: Teen who stabbed mother, brother and self to death deemed not intoxicated; "only" had antidepressants in his blood. Old head injury blamed.

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Dallas Morning News

Julieta Chiquillo Follow @jmchiquillo Email

The Plano teen who fatally stabbed his mother and brother before killing himself last month was not under the influence of illicit drugs, according to an autopsy report.

McCann Utu Jr., 19, called 911 on April 8 and told a dispatcher, “I have committed murder.” He stabbed himself before police got to him at his family’s West Plano apartment, where he was found near the bodies of Stacy Fawcett, 45, and Josiah Utu, 17.

A toxicology test found antidepressants in McCann’s blood.

Relatives and friends said McCann hadn’t been himself since two head injuries about three years ago. The first was sustained while he was playing basketball for Plano West Senior High School, and the second came during a fight with another student a few months later.

The teen’s family has released his brain to UT Southwestern Medical Center for study.

McCann cut his right thigh and punctured his heart, left lung and liver when he stabbed himself in the chest and abdomen, according to the autopsy report. His neck had three stab wounds.

McCann’s mother and brother also had multiple stab wounds, according to autopsy reports.

Josiah was stabbed once in the left arm, twice in the back and once in the chest.

Fawcett had five stab wounds to the chest, abdomen and right arm, as well as defensive cuts on her forearms. A knife blade with a missing handle was protruding from her lower abdomen, according to the autopsy report.