Alexandros Paporakis is charged with making a terrorist threat and illegal gun possession. The allegations have not been proven in court.

Prosecutors said Paporakis spent about two years planning an attack and had focused on the temple for two months. On Sunday, they said, he tried to shoot a man from a car, but his AR-style rifle jammed. Paporakis later texted a co-worker at a Taco Bell in Arlington Heights that the man was “certainly saved by his God today,” according to prosecutors.

The co-worker and another employee called 911. Police found Paporakis in the parking lot of a Palatine apartment complex, prosecutors said. A search of his apartment turned up a rifle, magazines, about 300 rounds of ammunition, a gas can and Nazi-related items.

In an eight-page manifesto described in court records, Paporakis identified himself as a white supremacist and expressed hatred toward people of other races, particularly people from India, prosecutors said. They alleged he described nonwhite people as “subhumans” and outlined a plan to kill as many as possible. A judge cited Paporakis’ self-description as a white supremacist in ordering him detained.

U.S. Rep. Raja Krishnamoorthi, a Schaumburg Democrat, was at the Aurora temple with family members, including his parents, for the start of Navaratri, a nine-day Hindu holiday. He told the Chicago Sun-Times he did not see the suspect and learned of the incident from media reports Wednesday.

Krishnamoorthi said the manifesto showed that hateful sentiment fueled the alleged actions and that he would ask the FBI to investigate and prosecute the case as a hate crime. He also warned that racist rhetoric can contribute to violence and called for people to stand with communities targeted because of their religion, race or identity.

The case brings renewed concern for local Hindu communities and other groups targeted by hate, as investigators and prosecutors pursue allegations that the planned attack was motivated by racial and religious animus.