SAN FRANCISCO (CBS SF) — The San Francisco medical examiner’s office on Monday identified a man who is believed to have killed himself and his 9-year-old son last week in a shooting in the city’s Marina District.

Officers initially responded to a well-being check in the 3800 block of Scott Street and found the man and his son, both dead from gunshot wounds, police said.

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The medical examiner’s office identified the man as 40-year-old Stephen O’Loughlin and the 9-year-old as Pierce O’Loughlin, both San Francisco residents.

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Police are investigating the deaths as a murder-suicide.

O’Loughlin had reportedly been involved in an ongoing custody battle over the boy with his ex-wife.

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