Washington (CNN) โ€” Nine US citizens have died in the conflict in Israel, a US National Security Council spokesperson said Monday.

โ€œAt this time, we can confirm the death of nine U.S. citizens. We extend our deepest condolences to the victims and to the families of all those affected, and wish those injured a speedy recovery. We continue to monitor the situation closely and remain in touch with our Israeli partners, particularly the local authorities,โ€ the spokesperson said in a statement.

The spokesperson added, โ€œWe continue to monitor the situation closely and remain in touch with our Israeli partners, particularly the local authorities.โ€

US authorities have been scrambling to establish how many Americans have been killed or taken hostage in the conflict. Secretary of State Antony Blinken told CNNโ€™s Dana Bash on โ€œState of the Unionโ€ Sunday that the US was โ€œworking overtimeโ€ to verify reports of missing and dead Americans, and Israeli Minister of Strategic Affairs Ron Dermer said Americans are among the โ€œscoresโ€ of hostages being held in Gaza.

State Department spokesman Matt Miller told CNNโ€™s Phil Mattingly on Monday that US authorities are in close contact with Israelโ€™s government and the families of those affected by the attack.

This story is breaking and will be updated.