WASHINGTON (TNND) — Unsolicited pizza deliveries to several federal judges' homes have prompted increased security concerns and a demand for a Justice Department investigation.

Senate Judiciary Committee ranking member Dick Durbin, D-Ill., sent a letter to U.S. Attorney General Pam Bondi and FBI Director Kash Patel on May 6 urging officials to investigate what he says are "threats intended to show that those seeking to intimidate the targeted judge know the judge's address or their family members' address."

"The targeted individuals reportedly include Supreme Court justices, judges handling legal cases involving the Administration and the children of judges," Durbin wrote. "Some of these deliveries were made using the name of Judge Esther Salas’s son, Daniel Anderl, who was murdered at the family’s home by a former litigant who posed as a deliveryman."

In July 2020, Anderl was shot at the family home in New Jersey by an attorney posing as a delivery person. The lawyer, Roy Den Hollander, 72, had found her address online. He was later found dead of a self-inflicted gunshot wound and had a document containing information about a dozen female judges from across the country.

Durbin asked for a response by May 20 on whether they had identified suspects, initiated prosecutions or found evidence that deliveries were coordinated.

Congress passed the Daniel Anderl Judicial Security and Privacy Act in 2022 in response to the heinous act. The law restricts the disclosure or sale of personal information of federal judges and their family members.

Salas spoke out against the mysterious deliveries last month.

"My murdered son’s name is now being attached, weaponized, is being used as a weapon against these judicial officers," she told NJ.com.

“It says, ‘I know where you live. I know where your kids live.’ And, ‘Do you want to end up like Judge Salas? Do you want to end up like her son?’ These are unprecedented attacks on judicial officers,” she added.

U.S. Circuit Court Judge J. Michelle Childs in Washington told The Washington Post she has received seven anonymous deliveries at her home in the past few months - one after she took part in a ruling against the Trump administration.

"It’s unsettling because I’d like to go to work every day, even with the hardest case, just feeling like there’s no sense of intimidation," Childs said. "It’s really an unnecessary and an unfortunate threat to our security when we’re trying to be judicial officers in a very neutral position with respect to our cases. You need a strong judiciary for the system to work. This is infringing on democracy generally."

Childs and Salas reportedly discussed the deliveries with the U.S. Marshals Service and told them each time a pizza arrives at the door.

When asked about the deliveries, the Marshals Service declined to discuss the deliveries in detail with The Washington Post, but a spokesperson said in an email that the agency "is looking into all the unsolicited pizza deliveries to federal judges and taking appropriate steps to address the matter."

The Justice Department's inspector general said in 2021 that the Marshals Service lacks the capability of adequately detecting threats against federal judges across the nation and uses outdated security equipment to protect judges' homes.

The agency's report highlighted serious security gaps in the Marshals Service's efforts to ensure the safety of more than 2,700 sitting judges as the number of threats against judges continued to rise.

The National News Desk reached out to the FBI and Department of Justice for comment but has yet to hear back.