Authorities reviewing writings tied to DC shooting suspect accused of killing Israeli Embassy staffers outside Jewish museum.

The suspect accused of gunning down two Israeli embassy staff members outside a Jewish museum in Washington DC has been charged with first-degree murder, as well as murder of foreign officials and related firearm charges.

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Federal prosecutors are investigating the fatal shootings of a couple leaving a reception for young diplomats at a Jewish museum in Washington as a hate crime and an act of terrorism. The suspect told police officers,

TEL AVIV, Israel (AP) — The two people shot and killed outside a Jewish museum in Washington were young staffers at the Israeli Embassy who were soon to be engaged. The suspect shouted “Free Palestine” as he was being arrested.

The two embassy employees were killed by a gunman Wednesday night after an event at the Capital Jewish Museum.

Those responsible for the fatal attack against two Israeli Embassy employees in Washington, D.C., on Wednesday will be prosecuted to the "fullest extent of the law," according to the White House.