SFPD officer arrested on firearms charges

An 18-year veteran officer of the San Francisco Police Department was arrested Tuesday on suspicion of manufacturing and possessing an assault weapon, a department spokesperson said.

Thomas Abrahamsen, 50, surrendered himself Tuesday and was booked into San Francisco County Jail on one felony count of manufacture of an assault weapon and one felony count of possession of an assault weapon, police spokesperson Sgt. Michael Andraychak said.

The arrest stems from an investigation that began last summer by SFPD’s Internal Affairs Division, which looked into Abrahamsen based on information from other department members, according to Andraychak.

The investigation allegedly revealed that Abrahamsen, a Berkeley resident, had manufactured and possessed a prohibited AR-15 assault rifle and AR-15 components, Andraychak said.

“In the spirit of the ‘Not on My Watch’ initiative, department members will continue to hold each other accountable and will act swiftly to report any behavior that might bring dishonor to the Police Department,” Acting Police Chief Toney Chaplin said in a statement.

Abrahamsen has been placed on unpaid administrative leave.

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