US citizens believed to be among hostages held by Hamas, 11 Americans dead: report

"As we continue to account for the horrors of the appalling terrorist assault against Israel this weekend and the hundreds of innocent civilians who were murdered, we are seeing the immense scale and reach of this tragedy. Sadly, we now know that at least 11 American citizens were among those killed—many of whom made a second home in Israel," Biden said.

"My heart goes out to every family impacted by the horrible events of the past few days. The pain these families have endured, the enormity of their loss, and the agony of those still awaiting information is unfathomable," he added.

Biden said that "the safety of American citizens — whether at home or abroad — is my top priority as President."

He noted that while the US is working to confirm identities, "we believe it is likely that American citizens may be among those being held by Hamas."

"For American citizens who are currently in Israel, the State Department is providing consular assistance as well as updated security alerts. For those who desire to leave, commercial flights and ground options are still available. Please also take sensible precautions in the days ahead and follow the guidance of local authorities."

Biden's statement came after the White House called a lid on Monday shortly before noon, the second day this has occurred. On Sunday, a lid was called at 11:34 am, with the president and first lady holding a BBQ.