"The preliminary report indicates that the number is likely to increase from the reported seven but we are yet to establish the actual numbers," Uganda Red Cross spokeswoman Irene Nakasiita said in a statement.
Nakasiita described the situation as tense with "community members... scared and fleeing from their homes."
"In the meantime, the whole district, Bududa is still experiencing heavy downpour and we are expecting more of the same in other landslide prone areas."
Bududa district in the foothills of Mount Elgon, which lies on the border between Uganda and Kenya, is a high risk area for landslides.
Government efforts to move vulnerable people to neighbouring districts have faced resistance from residents.
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