A federal grand jury on Wednesday handed down a 44-count indictment against the suspect in the mass shooting at Tree of Life Synagogue in Pittsburgh.

The indictment charged Robert Bowers, who is being held at a county prison while he awaits arraignment, with 11 counts of obstruction of free exercise of religious beliefs resulting in death, 11 counts of use of firearm to commit murder and two counts obstruction of free exercise of religious beliefs involving attempt to kill.

Bowers is also charges with 11 counts of use of firearm in a crime of violence, eight counts of obstruction of free exercise of religious beliefs/attempting to kill a law enforcement officer and one count of obstruction free exercise of religious beliefs/injuring law enforcement officer.

Bowers, 46, of Baldwin, Pa., opened fire on Saturday on people at the synagogue, where members of the Tree of Life, Dor Hadash, and New Light Jewish congregations gathered were gathered on Saturday. He used multiple firearms, including Glock .357 handguns and a Colt AR-15 rifle.

While inside the Tree of Life Synagogue, Bowers made statements indicating his desire to “kill Jews,” the Justice Department said.

Eleven worshipers were killed, two members were critically injured and an additional four other law enforcement officers were injured. The attack was the deadliest known attack on the Jewish community in United States history.

“Hatred and violence on the basis of religion can have no place in our society,” Attorney General Jeff Sessions said in a statement. He called the crimes “incomprehensibly evil and utterly repugnant to the values of this nation.”

Bowers is expected back in court on Thursday to be arraigned.

"The defendant faces a maximum possible penalty of death, or life without parole, followed by a consecutive sentence of 535 years' imprisonment,” the Justice Department said.

Early Saturday after the attack, the U.S. Attorney’s Office in Pennsylvania filed 29 charges against him. Later Saturday, Pittsburgh police filed 11 counts of criminal homicide against Bowers, along with six counts of attempted homicide, six counts of aggravated assault and 13 counts of ethnic intimidation.

Bowers was not charged with “domestic terrorism," as there is no federal law specifying “domestic terrorism” is a crime.

A spokesman for the FBI Agents Association told CNN's Josh Campbell on Saturday: "It is time to treat domestic terrorism as the national threat that it is, and track, analyze and punish political violence at the federal level. Winning the fight against domestic terrorism is not about parties or political views; it is about ending political violence."