Slain staffer Yaron Lischinsky had purchased an engagement ring and was planning to propose to his colleague Sarah Milgrim.

Israeli President Isaac Herzog said early Thursday morning that the country remains united with the families of slain embassy staffers.  Sarah Milgrim and Yaron Lischinsky were fatally shot

"Please pray for the families of the victims. We will bring this depraved perpetrator to justice," DHS Sec. Kristi Noem said.

A man, with an Israeli flag with a cross in the center, looks on next to police officers working at the site where, according to the U.S. Homeland Security Secretary, two Israeli embassy staff were shot dead near the Capital Jewish Museum in Washington,

The fatal shooting of two Israeli embassy staffers near the Capital Jewish Museum has prompted D.C. police to increase security amid rising concerns about antisemitism.

Israeli missions in the United States have beefed up security and lowered their flags to half-staff after the murders took place.