The man accused of of using a machete to wound five people at a Hanukkah celebration now faces hate crime charges after authorities discovered anti-Semetic journal entries.
Grafton Thomas had already pleaded not guilty to five counts of attempted murder after the Saturday night attack in Monsey, New York.
But on Monday, federal authorities also charged Thomas with obstruction of free exercise of religious beliefs involving an attempt to kill.
In a criminal complaint, FBI Special Agent Julie S. Brown said investigators found journal entries in Thomas' home that 'express anti-Semetic sentiments.'
One entry said 'Hebrew Israelites' took from the 'powerful ppl (ebinoid Israelites)' and questioned 'why ppl mourned for anti-Semitism when there is Semitic genocide.'
The criminal complaint said 'ebinoid Israelites' appears to be a reference to the 'Black Hebrew Israelite' movement.
The journal also referred to 'Adolf Hitler' and 'Nazi Culture' on the same page as drawings of a Star of David and a Swastika, according to the complaint.
The internet search history from a cell phone found in Thomas' car included searches such as 'Why did Hitler hate the Jews' and 'German Jewish Temples near me.'
The searches also included the phrase 'Prominent companies founded by Jews in America.'
On Saturday -- the day of the attack -- the search history showed an article called 'New York City Increases Police Presence in Jewish Neighborhoods After Possible Anti-Semitic Attacks. Here's What To Know.'
Saturday's was the latest in a long series of attacks against Jewish New Yorkers. Recent violence has prompted new hate crime education in some schools and heightened security in Jewish neighborhoods.
Suspect's family says he has no history of anti-Semitism
The family of suspect Grafton Thomas said he has a 'long history of mental illness and hospitalizations,' according to a statement released by Thomas' attorney.
'He has no known history of anti-Semitism and was raised in a home which embraced and respected all religions and races,' the statement said.
The family has asked the attorney to seek an 'immediate mental health evaluation' for Thomas.
One witness hit the attacker in the face with a table
Witnesses inside the home described a suspect who wielded a huge knife -- one person said it was like 'a broomstick' -- and stabbed people indiscriminately.
Josef Gluck initially ran away from the danger, then came back to help others. He said the rabbi's home was filled with dozens of people, ranging from 2 months old to 80 years old.
Realizing the attacker's rampage wasn't over, Gluck said he grabbed a coffee table, went after the assailant and 'hit him in his face.'
Eventually, the assailant decided to leave. Gluck noted the suspect's license plate number and reported it to authorities, who found Thomas about an hour later.
Thomas pleaded not guilty to five counts of attempted murder and one count of first-degree burglary. His bail was set at $5 million.
If released on bond, Thomas must forfeit any firearms he owns and stay away from the victims and the rabbi's home, a judge ruled.
One of the victims was critically injured
The five people injured inside Rabbi Chaim Rottenberg's home were all Hasidic Jews, the Orthodox Jewish Public Affairs Council for the Hudson Region Valley said.
One of them was the rabbi's son, who is recovering.
According to the criminal complaint, one victim was in critical condition with a skull fracture.
Two victims treated at Good Samaritan Hospital have been released, hospital spokeswoman Helene Guss said.
The condition of the fifth victim was not immediately clear.
A spate of attacks against Jewish New Yorkers
Gov. Andrew Cuomo said he's directed state police to increase patrols and security in Orthodox Jewish neighborhoods across New York state.
Saturday's stabbing marks the latest in a string of at least 13 anti-Semitic acts in New York in the past three weeks, in addition to other hateful incidents targeting the black, Latino and LGBT communities, he said.
The governor has directed the state's Hate Crime Task Force to investigate the latest attack.
'In New York, we will always stand up and say with one voice to anyone who wishes to divide and spread fear: you do not represent New York and your actions will not go unpunished.'
Rockland County, where the attack took place, has the largest Jewish population per capita of any US county, according to New York. Almost one-third of its population is Jewish.
Monsey, the area where the rabbi's home was located, is about 40 miles north of Brooklyn.