WASHINGTON (AP) — The United States is sending investigators to India to help unravel who was behind the terrorist attacks that targeted largely foreigners in the commercial and tourist center of Mumbai. Three Americans are confirmed among those injured.

The State Department urged Americans not to travel to the stricken city — at least through the weekend — as U.S. officials checked with Indian authorities and hospitals to learn more about the extent of casualties.

A U.S. investigative team headed to Mumbai today, a State Department official said, speaking on condition of anonymity because the U.S. and Indian governments were working out final details of the cooperative effort. The official declined to identify which agency or agencies the team members came from.