President Trump offered his "deepest sympathies" Saturday to the victims of a synagogue shooting near San Diego, saying the attack "looks like a hate crime."

“My deepest sympathies go to the people that were affected, the families, their loved ones,” Trump told reporters on the South Lawn of the White House as he departed for an evening rally in Wisconsin.

"Obviously looks right now, based on my last conversations, looks like a hate crime. Hard to believe. Hard to believe," said Trump. "We're some doing very heavy research. We'll see what happens, what comes up. At this moment it looks like a hate crime, but my deepest sympathies to all those affected and we'll get to the bottom of it. It looks like [the] person was apprehended."

Trump also offered his sympathy to the Jewish community at the rally, saying "America's heart is with the victims of the horrific shooting in Poway, California," and the whole nation stands in solidarity.

"We forcefully condemn the evil of anti-Semitism and hate, which must be defeated," he said.

Authorities have detained a 19-year-old man suspected of killing one person and injuring three others at the Chabad of Poway synagogue north of San Diego. The institution was holding a Passover celebration. The Jewish holiday ends at sundown Saturday.

San Diego County Sheriff William Gore addressed the media Saturday confirming that one elderly woman was killed in the attack. A rabbi was reportedly among those injured. Gore said the attack was proliferated by a white male using an AR-style rifle.

In October, exactly six months ago to the day, a gunman murdered 11 people during celebrations at the Tree of Life synagogue shooting in Pittsburgh, Pa. The accused gunman, Robert Bowers, was indicted in January on 65 counts that include federal hate crime charges. He could face the death penalty.

Trump's rally was intended to rival Saturday evening's White House Correspondents' Dinner in Washington. Trump also hosted a rally on the evening of the Pittsburgh massacre.