KAMPALA—Ugandan opposition leader Bobi Wine’s party said on Sunday that it was preparing to challenge President Yoweri Museveni’s election win and condemned what it called the house arrest of Wine, as news emerged of two people killed in protests over the result.

Musician-turned-politician Robert Kyagulanyi, also known as Bobi Wine, speaks during a press conference at his home in Magere, Uganda, on Jan. 15, 2021. Sumy Sadruni/AFP via Getty Images
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