Robert Bowers, the alleged gunman accused of killing 11 Jewish worshippers at a Pittsburgh synagogue on Saturday has pleaded not guilty.
Mr Bowers, 46, has requested a jury trial, US media reported on Thursday.
He faces 44 counts of murder, hate crimes, obstructing religious practices and other crimes. Prosecutors are seeking the death penalty.
Authorities called the attack on the Tree of Life synagogue the worst anti-Semitic incident in US history.
In addition to those killed, six people were injured, including four police officers, before Mr Bowers surrendered to law enforcement. Read more