Ugandan opposition politician Bobi Wine has filed a legal challenge against the outcome of last month's presidential election, which he says was rigged.
A lawyer for the musician-turned-MP's party - the National Unity Platform - said they wanted the poll to be re-run.
Incumbent Yoweri Museveni - who came to power in 1986 - won with 58% of the votes.
Bobi Wine, whose real name is Robert Kyagulanyi, got 35%.
Mr Museveni's NRM party said over the weekend it had assembled a legal team to defend his victory.