When Israeli military officials said that Hezbollah had stashed $500 million in gold and cash under a Beirut medical center, there was a scramble to evacuate the facility, and now a debate is raging over the Israeli accusation.

U.S. Defense Secretary Lloyd Austin said on Wednesday that he had not seen evidence that there was a Hezbollah bunker filled with cash built under a hospital in Beirut, adding that Washington would continue to work with Israel to get better insights.

The Israel Defense Forces provided the location of an alleged Hezbollah-owned vault in Lebanon that the military claims is storing hundreds of millions of dollars in cash and gold. In recent weeks, the IDF has been targeting the strongholds of Hezbollah’s financial arm,