From the purchase of a $38.5 million aircraft to millions of dollars in Michael Jackson memorabilia, a top government official in Equatorial Guinea acquired assets that are incompatible with any legitimate income, according to federal prosecutors in Washington.

The U.S. Justice Department is pursuing an aggressive and rare civil forfeiture case targeting possessions of Teodoro Nguema Obiang Mangue, a member of the Equatorial Guinea cabinet and son of the central African nation’s president.