Seattle police are investigating after a 14-year-old boy was found unresponsivle with multiple injuries following a “domestic violence altercation” on Thursday.

The boy was taken to Harborview Medical Center in critical condition, police said, but he died at the hospital.

The teen’s 29-year-old mother was arrested for investigation of homicide.

Police said “the homicide and sexual assault and child abuse units” were investigating the incident.

No further information was released as of Thursday night.

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