The U.S. State Department said on Friday (July 1) that it was too early to say who was involved in a hostage situation at a restaurant in the Bangladeshi capital Dhaka or what the motivation might be, but it confirmed that all Americans working at the U.S. mission there had been accounted for.

"We have accounted for all Americans working for the chief of mission authority" in Dhaka, State Department spokesman John Kirby told a press briefing. He said the situation was "very fluid, very live."

Bangladeshi police said several foreigners were among those held hostage and said an operation would start "soon" to rescue them.