Photos: At least 11 people dead & 6 injured at Pittsburgh #SynagogueShooting today

Eleven people were killed and at least six more were injured -- including four police officers -- when a gunman opened fire at a Pittsburgh synagogue Saturday morning, authorities said.

"It's a very horrific crime scene," Alleghany Public Safety Director Wendell Hissrich told reporters during the press conference Saturday afternoon. "It's one of the worst that I've seen." Police responded earlier Saturday to reports of active gunfire at the Tree of Life*Or L’Simcha congregation, where a service as taking place, Hissrich said. The suspect is in custody and has been taken to the hospital, Hissrich said, and it appears there is no longer an active threat to the community.

The shooter has been identified as Robert Bowers, who is 46 years old and lives in Pittsburgh. Bowers use at least one assault rifle in the shooting and had three handguns on him. Bowers was not known to the FBI before Saturday, Bob Jones, the agency's special agent in charge, said during a press conference Saturday afternoon. He is believed to have acted alone, Jones added. He suffered multiple gunshot wounds and was in fair condition at a local hospital, Hissrich said. The congregants were attending a baby-naming ceremony in the synagogue, Pennsylvania's state attorney general told the Associated Press. There were no children among the dead, Hissrich said.

ADL CEO Jonathan A. Greenblatt released the following statement in response to the horrific and fatal anti-Semitic attack at the Tree of Life Synagogue in Pittsburgh today. 

Our hearts break for the families of those killed and injured at the Tree of Life Synagogue, and for the entire Jewish community of Pittsburgh. This is likely the deadliest attack on the Jewish community in the history of the United States. We are actively engaged with law enforcement to support their investigation and call on authorities to investigate this as a hate crime. It is simply unconscionable for Jews to be targeted during worship on a Sabbath morning, and unthinkable that it would happen in the United States of America in this day and age. Unfortunately, this violent attack – the deadliest anti-Semitic attack in the United States since 2014 – occurs at time when ADL has reported a historic increase in both anti-Semitic incidents and anti-Semitic online harassment. As we mourn those lost and search for answers, ADL will remain steadfast in its mission to fight anti-Semitism wherever and whenever it may occur.

ADL is the world’s leading anti-hate organization. Founded in 1913 in response to an escalating climate of anti-Semitism and bigotry, its timeless mission is to protect the Jewish people and to secure justice and fair treatment for all. Today, ADL continues to fight all forms of hate with the same vigor and passion. A global leader in exposing extremism, delivering anti-bias education, and fighting hate online, ADL is the first call when acts of anti-Semitism occur. ADL’s ultimate goal is a world in which no group or individual suffers from bias, discrimination or hate.