“This is a horrific crime, and these crimes are not going to be tolerated by me and by this office,” U.S. Attorney for D.C. Jeanine Pirro said in a press briefing Thursday.

Two Israeli embassy staff were killed in a shooting outside an event at the Capital Jewish Museum in Washington, DC, on Wednesday night, according to officials and media reports.

They were leaving a young diplomats event at the Capital Jewish Museum that was meant to “foster unity and celebrate Jewish heritage” when they were killed on Wednesday.