One of the biggest bombshells to come out of the Federal Bureau of Investigation’s Labor Day weekend document dump on the Clinton email investigation is the revelation that she had used thirteen mobile devices to access emails on her private server, and at least eight of them were used while she was secretary of state, undermining her claim that she had only used one.

The FBI was unable to obtain any of those devices according to the documents — and now we can guess why. The FBI discovered that at least two of Clinton’s BlackBerrys had been physically destroyed. With a HAMMER.

The FBI said in a report that an aide to Bill Clinton, Justin Cooper, recalled “two instances where he destroyed Clinton’s old mobile phones by breaking them in half or hitting them with a hammer.” Clinton had 13 mobile devices that she potentially used to access emails on her private clintonemail.com server based out of her Chappaqua, New York home, according to the FBI. The FBI report said that “the whereabouts of Clinton’s devices would frequently become unknown once she transitioned to a new device.” The revelation from Cooper reveals that at least two of the devices were scrubbed of all information before being physically destroyed.

“The real issue is she was trying to destroy evidence,” said Rep. Sean Duffy (R-WI) on Fox News Saturday morning. “After Congress subpoenaed documents, after the FOIA requests, after the New York Times laid out that she had a private server, what did she do? They smashed her old BlackBerrys, number one, and they took a Bleachbit to destroy a portion of the emails that were on the server!” Duffy exclaimed.

He added, “Who on earth destroys emails that are about your yoga schedule, or about Chelsea’s wedding, or condolence notes? You only destroy evidence if its going to indicate that you’ve committed a crime…or it’s politically toxic for your presidential campaign.”

“There’s so much smoke here, we believe there has to be fire,” Duffy said. And he indicated that Republicans may hold Clinton in contempt for lying to Congress in testimony last fall about her private email server.

“We can hold her in contempt of Congress and send that to the Justice Department,” Duffy said. “But do you think the Obama Department of Justice is going to pursue charges against Hillary Clinton? Not.”