The F.B.I. also said it had opened a domestic terrorism investigation into the shooting at a Gilroy, Calif., garlic festival.
The gunman who killed three people and injured 13 in Gilroy, Calif., had a “target list” of religious institutions, Democratic and Republican political organizations, and federal buildings, the F.B.I. said Tuesday, announcing that it had opened a domestic terrorism investigation.
The suspect had been exploring several “competing” violent ideologies, said John F. Bennett, the F.B.I. special agent in charge in San Francisco, at a news conference.
Mr. Bennett said investigators had not yet uncovered a motive and were trying to determine which ideology, if any, the gunman had ultimately subscribed to, and if anyone had helped him prepare for the shooting. The list also included courthouses and the garlic festival, Mr. Bennett said.
He said no people were named on the list, and that all the organizations operated nationally. The F.B.I. was in the process of notifying the targeted groups. Mr. Bennett said the shooter did not have a manifesto.
The gunman fired 39 rounds in the shooting at the garlic festival on July 28, Scot Smithee, the Gilroy police chief, said Tuesday. Police found a 75-round drum magazine and five 40-round magazines near the gunman, who killed himself after being shot multiple times by the police, Chief Smithee said.