The Department of Homeland Security (DHS) confirmed that employee Lauren Bullis was killed while walking her dog in Atlanta by Olaolukitan Adon-Abel, a naturalized U.S. citizen under the Biden administration.

Bullis, 40, worked as an auditor for DHS’s Office of Inspector General when she was targeted during a violent rampage early this week. According to officials, Adon-Abel—26 years old and born in the UK—allegedly carried out three random attacks across DeKalb County, fatally shooting Bullis and another woman outside a Checkers restaurant while also critically injuring a homeless man near a Kroger store.

DHS Secretary Markwayne Mullin revealed that Adon-Abel was naturalized under the Biden administration in 2022 despite having a documented history of criminal activity. His prior record includes an arrest last fall for sexual battery in Chatham County, followed by convictions for battery against a police officer, obstruction, assault with a deadly weapon, and vandalism. Mullin stated that Adon-Abel “has also been arrested for the murder of an unidentified woman whom he reportedly shot outside a Checkers” before attacking the homeless man.

“Since President Trump took office, USCIS has implemented measures to ensure individuals with criminal histories do not attain citizenship,” Mullin added in his statement. “This murderer should have been deported immediately.”