The city of Pittsburgh's public safety director was visibly emotional as he gave an update Saturday on the synagogue shooting that claimed the lives of multiple people.

Multiple casualties were reported at the Tree of Life synagogue, located in Pittsburgh's Squirrel Hill neighborhood, and six people were injured, including four police officers.

"We've had a tragedy here today," Public Safety Director Wendell Hissrich said.

Hissrich became emotional when stating the phone number that victims' families could call for updates. He then added that Saturday's attack will be investigated by the FBI and was being considered a federal violation.

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Officials identified the suspect in Saturday's shooting as Robert Bowers.

According to CBS 2 Pittsburgh, the alleged gunman shouted "all Jews must die" as he carried out his attack.

Hissrich urged people to avoid the area as officials investigated the "lengthy" crime scene.

He described the crime scene as "very horrific."

"It's one of the worst that I've seen, and I've been on some plane crashes. It's very bad," Hissrich said.

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