At least four people, among them two police officers, have been killed in two separate explosions in the Ugandan capital, Kampala, local media have reported.
The state-owned New Vision website said that two bodies had been recovered from the scene of an explosion near the parliament building.
"Two bodies have so far been recovered after an explosion on Parliamentary Avenue in the heart of Kampala," it said.
Privately-owned Urban Television said that two police officers were confirmed dead in a separate attack, which targeted the main police station in the capital.
The Independent website says the main hospital in Kampala has been overwhelmed by victims of the two blasts.
The two explosions follow a 23 October bomb attack at a restaurant in Kampala, in which at least one person was killed.
The so-called Islamic State group later said it had carried out the attack.