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 (IDF) on Monday said an underground bunker was found beneath a Beirut hospital following a night of airstrikes that targeted Hezbollah's financial network. During a press briefing, chief military spokesperson Rear Admiral Daniel Hagari said the bunker contained "at least $500 million in cash and gold."

Hezbollah has stashed hundreds of millions of dollars in cash and gold in a bunker built under a hospital in Beirut, Israel's military said on Monday, adding it will not strike the facility as it keeps up attacks against the group's financial assets.