A woman has been killed and three other people injured in a shooting at a California synagogue.
The attack happened in Poway near San Diego, while worshippers were celebrating the last day of the Jewish festival of Passover.
Just before 11:30am, police were alerted that someone had entered the Chabad synagogue and opened fire with an assault-type weapon.
The New York Times reports the gunman entered the synagogue "yelling anti-Semitic slurs, and opened fire with an AR 15-style gun".
After the shooting, the suspected shooter attempted to flee the scene by car, but an off-duty police managed the stop the vehicle.
A 19-year-old suspect has been arrested.
The four people injured in the shooting were taken to a local hospital, but the woman died of her injuries.
The synagogue's rabbi was shot in the hands, and has since undergone surgery.
A 34-year-old man and a child were injured by shrapnel from bullets, with doctors saying they are both 'doing well'.
San Diego County Sheriff's Department said they're not aware of any other threats.
He added that the public was being encouraged to continue with other events and activities and normal.
"Poway will stay strong"
Poway mayor Steve Vaus said it's a tough time for the community, but he insisted they "will get through this".
He observed: "Our thoughts and prayers will be with the families and those who are investigating.
"Poway will stay strong, and we will always be a community that cares for one another."
US President Donald Trump, meanwhile, said his deepest sympathies were with those affected.
He told reporter the California synagogue shooting appeared to be a hate crime.
Speaking outside the White House, he said: "[It's] hard to believe.
"We'll get to the bottom of it. It looks like the person was apprehended... no more danger. Law enforcement has done a fantastic job."
Yesterday's shooting came exactly six months after the attack at the Tree of Life synagogue in Pittsburgh.
That shooting left 11 people dead, and was one of the deadliest ever attacks against the Jewish community in the US.
In a statement quoted by Associated Press following the California attack yesterday, the Pittsburgh synagogue said: “These senseless acts of violence and prejudice must end. Enough is enough!”