Federal prosecutors want to pursue the death penalty for Pittsburgh synagogue shooting suspect Robert Bowers.

U.S. Attorney Scott Brady said they are seeking Attorney General Jeff Sessions' approval for the move, according to the Associated Press.

Eleven people were killed and six others wounded, including four police officers, after Bowers walked into the Tree of Life Synagogue in Pittsburgh on Saturday morning and opened fire while making comments about mass-killing Jews, officials said. Bowers was wounded by police responding to the shooting and surrendered.

Brady said multiple search warrants have been issued as part of an investigation into the trucker.

Sessions opened the door to the death penalty Saturday when he said the DOJ was filing federal hate crime charges against Bowers.

“Hatred and violence on the basis of religion can have no place in our society,” Sessions said. “Every American has the right to attend their house of worship in safety."

He described the massacre as "reprehensible and utterly repugnant to the values of this nation."

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Earlier in the day Saturday, President Trump called the mass shooting an " anti-Semitic act" and said such crimes should result in the death penalty. He lamented that these types of cases can take years to make their way through appeals courts and said laws on capital punishment should be more harsh.

"They should pay the ultimate price," he said of people who commit mass murder in places of worship and other areas where people gather. "I have felt that way for a long time."

Bowers, 46, faces 29 separate federal charges, including hate crimes. Of those charges, a majority are punishable by death.

Bowers' first court appearance is scheduled for Monday at 1:30 p.m.