NBC Washington

A Donald Trump delegate in Charles County, Maryland, has been indicted on child pornography and explosives charges, federal prosecutors announced Thursday. Caleb Andrew Bailey, 30, was elected as a Trump delegate last month.

Investigators began looking into Bailey in February, after a package he shipped to Wisconsin broke open en route and postal inspectors found that it contained ammunition and explosives. NBC Washington reports:

The package, which was addressed to someone in Wisconsin, was linked to Bailey a few days later when he called the U.S. Postal Service inquiring about the package. Investigators said Bailey did not have a federal explosives license to transport the explosives.

Authorities arranged to meet with Bailey at a postal facility on May 5 to discuss the package, but Bailey did not show up for the meeting.

Law enforcement then searched Bailey’s properties and found a machine gun, investigators said.

According to the Baltimore Sun, the indictment charges that Bailey “used a minor to engage in sexually explicit conduct” to produce child pornography. He faces up to 50 years in prison if convicted. The Trump campaign will have to use an alternate delegate at the Republican national convention in July if Bailey is unable to attend.