US authorities have identified the shooter in a Pittsburgh synagogue as Robert Bowers, a 46-year-old American.

Bowers was arrested after shooting at people at the Tree of Life synagogue in Pittsburgh, Pennsylvania synagogue, killing eight and injuring several while Shabbat prayer was being held at the site. Moments before going out to perpetuate the shooting at the synagogue, Bowers posted on his Twitter account this…

Robert Bowers Twitter

According to unofficial reports, Bowers was also a member of a neo-Nazi organization. Some witnesses have said that he shouted “all Jews must die” before firing on those in the building.

HIAS, the organization that defends refugees, held a special event on Shabbat last week for American Jews to express their solidarity in the face of this tragedy.