Authorities in Uganda said on Monday that 20 people had been arrested in connection to a gruesome attack on a school in Mpondwe, western Uganda, near the border with the Democratic Republic of Congo (DRC).

Iran PressAfrica: Some 42 people were killed when militants of the Allied Democratic Forces (ADF) rampaged the Lhubiriha Secondary School, burning, stabbing, and even shooting the victims.

"Twenty arrests have been made of suspected collaborators, suspected ADF collaborators," police spokesman Fred Enanga told a press conference.

In a separate statement, it was revealed that the school's head teacher and director were among those arrested.

The perpetrators fled back into the DRC, reportedly taking an unknown number of students hostage, with authorities saying that 15 people from the community, including five girls, were still unaccounted for after the attack.

Authorities in Uganda said on Monday that 20 people had been arrested in connection to a gruesome attack on a school in Mpondwe, western Uganda, near the border with the Democratic Republic of Congo (DRC).

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