White House press secretary Karoline Leavitt said Tuesday that the Trump administration is not aware of the United States being responsible for a strike on a girls' elementary school in Iran that reportedly killed 175 people.

"Not that we know of," Leavitt responded when asked about the alleged incident during a press briefing. She added that the Department of Defense is investigating the matter.

Leavitt also addressed questions about the rationale behind recent US military action against Iran, seeking to clarify the administration's position amid criticism and what she described as confusion over the "imminent threat" facing Americans.

The press secretary's comments come as the administration faces scrutiny over its Iran policy and military operations in the region. Critics have questioned the justification for recent strikes and expressed concerns about potential civilian casualties.

The Department of Defense has not yet released findings from its investigation into the reported school strike. No independent verification of the casualty figures or details of the alleged incident has been provided by US officials.