WASHINGTON (Reuters) - The United States believes there have been potentially multiple attacks on locations in Iraq, including the al Asad airbase that hosts U.S. forces, a U.S. official told Reuters on Tuesday, without providing additional information.

It was unclear what other sites may have been attacked. Tensions have mounted with Iran following a U.S. drone strike on Friday that killed Iranian military commander Qassem Soleimani.

Another U.S. official, speaking on condition of anonymity, had confirmed to Reuters earlier that a rocket attack had taken place against al Asad airbase, but did not confirm other sites.

U.S. President Donald Trump visited the base in his December 2018 trip to Iraq.