A 31-year-old Illinois man has been charged with two counts of murder after opening fire 21 times on a young couple exiting an event at the Capital Jewish Museum in Washington, D.C., late Wednesday, according to a criminal complaint, shooting the victims in the back and then firing again at the woman as she tried to crawl away.

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.