Homeland Security Secretary Kristi Noem said former President Joe Biden’s administration did not vet the suspect accused of shooting two National Guard members on Wednesday in Washington, D.C.

The suspect, 29-year-old Afghan national Rahmanullah Lakanwal, is alleged to have killed 20-year-old Sarah Beckstrom and critically injured 24-year-old Andrew Wolfe of the West Virginia National Guard in the ambush. Lakanwal, who reportedly previously worked with the CIA in Afghanistan, entered the United States under Biden’s Operation Allies Welcome program but was granted asylum earlier this year under President Donald Trump’s administration.