Police said a suspect was in custody after the shooting near the Capital Jewish Museum

A suspect is in custody after shooting dead two Israeli embassy staff outside a Jewish museum in Washington on Wednesday night.

The gunman, named by police as Elias Rodriguez, 30, of Chicago, approached a group of four people leaving an event at the Capital Jewish Museum and opened fire, killing Yaron Lischinsky and Sarah Milgrim.

Metropolitan police chief Pamela Smith said the shooter had been pacing outside the museum, which is steps away from the FBI’s field office, before the shooting.

After killing the pair, who officials said were a couple, he walked inside, where event security detained him. The suspect yelled: “Free, free Palestine,” after he was arrested, police said.