At least 11 people were killed and six others were injured after a gunman opened fire Saturday morning inside a synagogue in Pittsburgh, U.S. state of Pennsylvania, a city official said.
No children were among the fatalities and the six injured include four police officers but do not include the suspect, Wendell Hissrich, Pittsburgh's public safety director, told a press conference.
The initial call to 911 was made around 9:54 a.m. local time and officers were dispatched to the scene within a minute, Hissrich said.
The shooting occurred at the Tree of Life Congregation in Pittsburgh's Squirrel Hill neighborhood.
Police said the gunman, a heavy-set white male with a beard, surrendered and is in custody. The shooting occurred during a baby-naming ceremony at the synagogue, according to reports.
Multiple news outlets identified the shooter as Robert Bowers, a 46-year-old man from Pittsburgh. His social media posts were reportedly rife with anti-Semitic content.
Police sources told local CBS affiliate KDKA that the gunman opened fire while yelling "All Jews must die."
A rifle and three handguns were found at the scene.
Investigators believe the gunman was acting alone but his full motive still isn't known, said Bob Jones, the special agent in charge of the FBI's office in Pittsburgh.
Jones said the scene of Saturday's shooting at the synagogue was "the most horrific crime scene" he has seen" in 22 years with the FBI.