At least five people have been killed in clashes between rival Somali warlords fighting for control of the southern port city of Kismayo, residents said Saturday.

Gunmen from the Ras Kamboni militia of former Islamist warlord Ahmed Madobe -- who last month appointed himself "president" of the southern Jubaland region -- battled on Friday forces loyal to Bare Hirale, a former Somali defense minister who also leads a powerful militia.

Nine people were killed Friday night in fresh inter-clan violence in northeastern Kenya's border region with war-torn Somalia, police said Saturday.

"Nine people were killed, four in Mandera and five in Wajir," a police officer who declined to be named told Agence France Presse.

Six people have been killed in an ambush in northeastern Kenya's border region with war-torn Somalia, police said Wednesday following the latest in a string of attacks.

Unidentified gunmen attacked a pickup truck laden with passengers late Tuesday near Qooqae in the northeastern Mandera region, a troubled area hit by multiple attacks in recent months, local police chief Joseph Tenai said.

African leaders will pass a resolution Monday urging the International Criminal Court to refer back to Kenya the crimes against humanity cases against the country's top leaders, a senior African Union official said.

"We will be approving this morning what the ministers have proposed, definitely," AU security commissioner Ramtane Lamamra told Agence France Presse, referring to a draft agreed Friday by foreign ministers.

Gunmen have killed five people including two police officers in an attack along Kenya's volatile border with war-torn Somalia, with Islamist insurgents making a rare claim of responsibility.

Somalia's Islamist Shebab insurgents said they carried out the attack, in which gunmen fired on a police post near the border town of Liboi late Saturday, killing two police officers and three civilians.

Kenya made a new plea to the U.N. Security Council on Thursday to "terminate" International Criminal Court charges against President Uhuru Kenyatta and other leaders over political unrest in 2008.

But western nations on the 15-member council told Kenyan diplomats at a private meeting that Kenyatta, Deputy President William Ruto and one of their followers must face the court, diplomats said.

Kenya's reconciliation commission has said the president, security forces and judiciary should publicly apologize for past abuses going back 50 years, its final report seen Wednesday said.

Set up after bloody post-election violence in 2007-08, Kenya's Truth, Justice and Reconciliation Commission (TJRC) handed over its weighty four-volume report -- containing tens of thousands of testimonies gathered over four years detailing rights abuses the abuse of rights in the country -- to President Uhuru Kenyatta late Tuesday.

A shipment of 259 elephant tusks smuggled out of Africa has been seized in the United Arab Emirates, the International Wildlife Fund for Animal Welfare said Tuesday.

The tusks were discovered at a Dubai port in a container shipped from Mombasa, Kenya labelled as wooden furniture.

A police officer was killed and four were injured when armed gunmen attacked a police station in the northeastern Kenyan town of Mandera on the border with war-torn Somalia, police said Sunday.

"There was an attack with one fatality and injuries," regional police chief Charlton Mureithi said, without elaborating.

Kenya has written to the U.N. Security Council seeking to scrap the international crimes against humanity trials for President Uhuru Kenyatta and his Vice President William Ruto, according to a letter seen Thursday.

Kenyatta, 51, voted into power in March elections, is to go on trial in July at the International Criminal Court (ICC) in The Hague for crimes against humanity relating to post-election violence in 2007-08.