DHS worker killed in Atlanta

The suspect, Olaolukitan Adon Abel, is accused of shooting and stabbing Bullis while she was walking her dog, as well as killing another woman and critically injuring a man.

The Trump administration has seized on the case, highlighting the suspect's naturalization under the previous administration as evidence of failed immigration policies.

Investigators used a network of license plate readers to track the suspect's rented vehicle through several jurisdictions before making an arrest.

The tragic events have sparked a renewed debate over public safety and the vetting process for new citizens.