UPDATE: Man arrested on murder charge in case of teen found dead on Wasilla powerline trail
ANCHORAGE, Alaska (KTUU) - In an update on the case of a teenage girl who was found dead on a powerline trail in Wasilla on Nov. 15, 2024, Alaska State Troopers arrested a Wasilla man on murder charges Wednesday.
Sean Mobley, 45, has been charged with second-degree murder, manslaughter, and first-degree misconduct involving a controlled substance in relation to the death of 16-year-old Alena Toennis.
According to an AST dispatch, the Alaska Bureau of Investigation determined that “Mobley provided fentanyl to Toennis before he abandoned her on a Wasilla trail as she was experiencing an overdose.”
AST said she died as a result of an overdose from the fentanyl Mobley gave her. He has been remanded to Mat-Su Pretrial facility.
Updates will be made as they become available.
Original story:
On Nov. 18, 2024, troopers identified the teen as 16-year-old Alena Toennis of Wasilla.
Troopers say they were alerted to Toennis’ body around 7:20 a.m. Nov. 15.
The Alaska Bureau of Investigation has assumed case responsibility and is investigating this as a suspicious death due to the evidence found at the scene.
The teen’s aunt, Crystal Drake Toennis, posted on social media saying Alena’s body was found behind a business in the area of Seldon and Bogard Roads.
A spokesperson for the Matanuska-Susitna Borough School District confirmed that Toennis was a former student in the district before dropping out last year. Her family confirmed the last school she was enrolled in was Mat-Su Central School.
Alaska’s News Source reached out to Alaska State Troopers but did not receive a response to a request for comment.
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