A Colombian judge on Monday convicted former President Alvaro Uribe of abuse of process and bribery of a public official in a long-running witness tampering case, making him the country’s first ex-president to ever be found guilty at trial.

Former Colombian President Álvaro Uribe has been found guilty of witness tampering and bribery charges in a historic trial that gripped the South American nation and threatened to tarnish the conservative strongman’s legacy.

Former Colombian President Alvaro Uribe, 73, has been sentenced to 12 years of house arrest for abuse of process and bribery of a public official, marking the first conviction of a former Colombian head of state.