Marc Dutroux has been found guilty of kidnapping and raping six girls and killing four of them in a trial that has gripped Belgium for months.
After three days of deliberation, the jury found the man described by experts as a self-absorbed psychopath guilty on all counts for a series of crimes that shocked the country in 1996.
The 47-year-old was also convicted of leading a gang of kidnappers that abducted six girls, four of whom died.
Dutroux was charged with the kidnapping and rape of six girls and the murder of four of them.
While Dutroux pleaded guilty to charges of abduction and abuse, he denied the murder charges.
The jury found the two other co-defendants, including Dutroux's ex-wife Michelle Martin, guilty of similar charges.
But divisions among the 12 jury members on the guilt of a further co-defendant, businessman Michel Nihoul, caused the judge to suspend the proceedings to allow them to deliberate some more.
The eight female and four male jurors had been deliberating at a military base cut off from the outside world since Monday. Their verdicts follow more than three months of evidence.
The jury will deliberate separately on sentencing, probably next week, court officials have said.
