Three people have been killed in the second day of riots between Uganda security forces and rioters over a row between the government and the kingdom of Buganda.

The violence was triggered over land and power disputes between Ugandan President Yoweri Museveni's government and leaders of Buganda - one of Uganda's four ancient kingdoms.

As the riots got worse in the town of Kayunga and capital Kampala, the king of Buganda, Kabaka Ronald Mutebi, postponed his planned visit on Saturday to the flashpoint Bugandan town of Kayunga to the east of Kampala.

Rioters blocked streets as gunshots rang out in Kampala on Friday. Deputy police spokesman Richard Musesi told Reuters that three people, including a teenager, were killed.

Around 50 injured were admitted to Kampala's main Mulago Hospital and about the same number were arrested.

"This kid was not in the protest. They (security forces) shot him in the head in a shop," the boy's mother told Reuters.

At least eight people were killed and several others were injured on Thursday.

On Friday evening, Kampala's streets were mostly deserted, and thick plumes of black smoke from burning tires rose over the city's hills.

presstv