KAMPALA, Uganda — Rioters angry over political and land issues clashed with government forces for a second day Friday, and at least six people were killed in Uganda’s capital and an outlying area.

The violence, which has killed a total of 13 people since Thursday, stems from disputes between the government and members of the Buganda, one of Uganda’s four ancient kingdoms. Members of the Buganda ethnic group have clashed previously with the government over land rights.

Barricades of burning tires were erected in Kampala as stone-throwing mobs roamed the streets, underlining growing tensions in a nation hailed for its relative stability and economic growth.

— From wire reports