The mayor of Gilroy, California, held nothing back at an emotional candlelight vigil Monday night for the three victims slaughtered at the city’s annual garlic festival.

“We cannot let the bastard that did this tear us down,” a defiant Roland Velasco said to cheers from the crowd, as many hugged and cried.

Hundreds of residents attended, raising candles and tea lights and shouting “Gilroy Strong” — the words also appearing on a sign under an American flag covered in garlic cloves that hung from the front of the stage.

The vigil came as police sources said Santino William Legan, 19, was now “believed to be the only shooter,” despite initial reports of an accomplice, according to San Jose’s Mercury News.

Gilroy Police Chief Scott Smithee had confirmed Monday morning that there had been “multiple reports” of another person involved, but stressed, “We really don’t know.”

Legan used an AK-47-style assault rifle that he legally bought in Nevada just weeks ago to kill three people, ages 6, 13 and 25, and injure a dozen more. He would’ve been barred from purchasing the firearm in California, which bans most assault rifles and where you need to be 21 to buy them.

“The reach of California law ends at our borders, so we cannot control what other states do,” Attorney General Xavier Becerra said Monday, according to the Mercury News. “That’s what makes it so tough if other states don’t match us.”

John Donohue, a Stanford law professor who studies gun violence, said it proves that “the lax gun control states contribute to deaths in the most serious gun control states.”

“It really is shameful that we’re surrounded by states that don’t take this seriously,” he told the paper.

With Post wires