The White House has strongly condemned Friday's rocket attack at the Jordanian Red Sea port of Aqaba where two American naval ships were docked.
A statement says the United States condemns all such attacks, and that U.S. officials are investigating in cooperation with Jordan.
U.S. military officials say it is safe to conclude that the two warships, the USS Ashland and the USS were the main target.
One of the rockets hit a military warehouse, killing a Jordanian soldier. Another exploded near a military hospital. The third rocket landed about 15 kilometers away, on the Israeli side of the border near the town of Eilat. It did not explode.
Jordanian security forces have launched a massive hunt for four individuals suspected of firing the Katyusha rockets.
A group linked to al-Qaida has claimed responsibility in an unverifiable Internet statement.
Some information for this report provided by Reuters and AP.