By Bustle

Last week, a Saudi-led airstrike hit a school bus in Yemen and killed at least 40 children, according to the Red Cross, shocking the world. The United States sells Saudi Arabia some of the bombs it uses in Yemen, and the Pentagon says it doesn’t track what’s done with those munitions. But one senator has doubts: Elizabeth Warren wrote a letter about the Yemen bombings to the leader of U.S. forces in the Middle East on Tuesday, demanding more answers.

Warren’s letter addressed Gen. Joseph Votel, whom she previously interrogated in March when he appeared before the Senate Armed Services Committee. At the time, she asked Votel whether the Pentagon tracked what Saudi forces did with the bombs sold to them by the United States. “Senator, we do not,” he replied.

But a report from The Intercept earlier this month suggests otherwise. An intelligence report on a May airstrike in northern Yemen reportedly included “what appear to be comments from an American intelligence analyst,” according to The Intercept, meaning that a U.S. representative reportedly supervised the attack. Bustle has reached out to the U.S. Central Command for comment.

“The reported presence of U.S. advisors in a command center responsible for actively approving and directing such airstrikes […] raise[s] questions about whether the U.S. does in fact have the capability to track the origins, purpose and results of U.S.-supported airstrikes should it choose to do so,” Warren wrote in her letter.

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