BEN LOMOND, Calif. (KGO) -- The U.S. Air Force sergeant suspected of killing a Santa Cruz County deputy is now believed to have had a hand in the killing of a federal officer in Oakland.
That's according to our media partners at the Bay Area News Group.
Steven Carrillo was arrested on Saturday after authorities say he opened fire and deputies in Ben Lomond, killing Sergeant Damon Gutzwiller.
As Dan Noyes and the ABC7 News I-Team have been reporting, the FBI was investigating whether Carrillo had been involved in a shooting that killed a security officer at the Oakland Federal Building last month.
Dan's sources confirmed a white van was involved in both incidents and that investigators were researching Carrillo's cellphone tower pings to track his whereabouts.
WATCH: Santa Cruz Co. Sheriff Jim Hart's full news conference on Ben Lomond incident
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