El Salvador's ex-President Tony Saca was arrested over the weekend for alleged illicit enrichment, unlawful association and money laundering.
Saca was in office from 2004 to 2009 as part of the rightist Nationalist Republican Alliance.
Officers said in addition to Saca, six officials who served with him were arrested. Reuters reports that ex-communications minister Julio Rank and youth minister Cesar Funes were among those arrested.
Saca and two others were reportedly arrested during a wedding for one of his sons.
Earlier this year, in March, El Salvador's supreme court ordered a civil trial for Saca and his wife, Ana Ligia de Saca, because the ex-president could not explain how he acquired $5 million during his term.
Prosecutors said Saca declared his fortune at $3.6 million when he first took office.
Saca has not yet said where he acquired $5 million of the $6.5 million he gained while in office.
Saca was expelled from his political party in 2009 because of the financial irregularities, according to Reuters.
Elmer Charlaix, Saca's former private secretary, was also among those arrested. He allegedly had $18.7 million in private bank accounts. He too, could not explain the source of his wealth.
In addition, Saca's successor, former President Mauricio Funes is also under investigation for corruption.
The Associated Press contributed to this report.