Transcript for Rabbi says he will never forget the horror during deadly Pittsburgh synagogue attack
And I'm hearing people screaming. And it's here to my brain. I can a recent tape. Rabbi Jeffrey Maier says he will never forget the horror that happened inside this synagogue on Saturday morning and immediately and that's my congregation. Dropped to the floor. Do not move don't under a sale he still. The gunmen then opened fire on the congregation. They gathered for services. BI says the shooter hurled words of hate against Jews as he murdered them. Police say that man is 46 year old Robert Bauer he would be your group or a federal judge today in a wheelchair to face charges that he killed eleven people setting in motion plans for federal prosecutors to seek the death penalty. And rest assured we have a team of prosecutors. Working hard to ensure that justice is done. This is where bowers will now be held. His neighbor say they never suspected anything. It is his online world that reveals a different story. Post like this one calling Jews as the children of Satan on the freed social media site gab. Just become popular among white supremacists and other all right activists in white Nationalists who believe mainstream sites like FaceBook and Twitter censor their radical views. As authorities continued to investigate rabbi Meir says he's now left planning funerals. Other shops do. Have the congregation to tend. And I'm here. And I'm here for them tomorrow the first of many funerals will began and the president First Lady say they plan to be here with the community as well. Now you really NBC news Pittsburgh Pennsylvania.
This transcript has been automatically generated and may not be 100% accurate.