Prosecutors to seek war crimes trial for Dominic Ongwen.

War crimes prosecutors will Thursday seek to convince the International Criminal Court to put infamous Lord's Resistance Army commander Dominic Ongwen on trial on charges including keeping sex slaves in a rebel army.

Ongwen faces 70 counts of war crimes and crimes against humanity for his role from 2002 to 2005 in the rebel group's reign of terror in northern Uganda, led by its fugitive chief Joseph Kony.

A former child-soldier-turned-warlord, Ongwen was Kony's one-time deputy and one of the most senior commanders of the LRA, which is accused of slaughtering more than 100,000 people and abducting 60,000 children in a bloody rebellion against Kampala that began in 1986.

In the five-day confirmation hearing starting tomorrow, prosecutors will lay out the charges to a three-judge bench seeking to show that the evidence is solid enough to put Ongwen in the dock.

The judges will then have to determine whether Ongwen should stand trial.

The prosecution will focus in particular on four attacks on camps housing people forced to flee the LRA's violence.

More than 130 people -- many of them children and babies -- died in these attacks and dozens of others were abducted, according to the court document containing the charges.