The Ugandan military claims to have discovered bomb-making materials at a training facility west of the capital, Kampala.
The training facility was discovered at the home of a local man, said army spokesman Felix Kulayigye during a media tour of Kikubajinja village in Luwero district.
It claimed to be from the Allied Democratic Forces, a Ugandan militia that has sworn allegiance to the Islamic State group.
Authorities discovered nails, wires, and bullets in a tunnel dug in one of a house’s rooms.
Three people have been arrested; according to police, they had already purchased a car and were planning an attack.
The ADF has been accused of carrying out a string of bomb attacks in Uganda late last year. In November, the Ugandan army began a joint operation with the Congolese army to root out the ADF, which started as an uprising in Uganda but has been based in Congo since the late 1990s and pledged allegiance to the Islamic State in mid-2019.
According to a United Nations report, the group conducts frequent attacks and killed over 1,300 people between January 2021 and January 2022.
Uganda has sent at least 1,700 troops to neighboring Congo to assist in the fight against the ADF, and the two countries last week extended their joint operation, which began late last year.
From 2015, the ADF experienced a radicalisation after the imprisonment of its leader Jamil Mukulu and the rise of Musa Baluku in his place. From 2019, the ADF had split, with one part remaining loyal to Mukulu, while the other had merged into the Islamic State’s Central Africa Province under Baluku.