Somalia's al-Qaida linked Shebab vowed Thursday to move their war to neighboring Kenya, in a broadcast by a top commander urging fighters to rise up against Nairobi.

Kenyan troops are battling the hardline Islamists inside Somalia and the insurgents have already launched scores of bombings and killings in revenge, but the Shebab threat comes amid fresh security warnings of the risk of attacks in Kenya.

An Australian warship has seized 786 kilograms (1,733 pounds) of hashish in the Arabian Sea, the defense department said Thursday, one week after it found a large stash of heroin off Somalia.

The drugs, estimated to have a street value of Aus$30 million (US$28 million), were found on Monday after HMAS Darwin personnel searched a dhow -- a sailing vessel -- for 23 hours, the navy said.

The African Union force battling Somalia's al-Qaida-linked Shebab rebels said Tuesday it had conducted new air strikes against a rebel base in the south of the country, the second attack in three days.

A statement from Amisom said its planes were after "senior leadership and foreign al-Shebab fighters" at a base near the town of Jilib in Somalia's Middle Juba region.

Italy's navy on Tuesday rescued two boats packed with more than 500 migrants including 133 minors in the latest influx that has brought in more than 36,000 people so far in 2014.

A navy helicopter spotted the boats -- one towing the other following an accident -- south of Sicily on Monday.

A Somali politician was wounded Monday in a bomb blast in the latest in a string of attacks in the war ravaged capital Mogadishu, a local official said.

"The bomb was attached to his car... seriously injuring him," local district commissioner Abdulkadir Mohamed Abdulkadir told Agence France Presse.

Somalia's al-Qaida-linked Shebab said it had attacked an army convoy across the border in Kenya on Monday and killed several soldiers, but Kenya's army denied it suffered any casualties.

The convoy was attacked in the restive Mandera region of northeast Kenya near the Somali border, local police chief Noah Mwivanda said.

A special U.N. military force to protect aid workers deployed for the first time in the war-ravaged Somali capital Sunday, amid a wave of attacks blamed on al-Qaida-linked Shebab insurgents.

The 400-strong "defensive" guard force of Ugandan troops, based at the heavily fortified Mogadishu airport, is "mandated to protect U.N. staff and installations" in the capital.

At least 10 people were killed on Monday in a huge explosion targeting a senior official in the southern Somali town of Baidoa, police and hospital staff said.

"The target was a pick-up truck transporting a senior local official," police spokesman Mohamed Moalim Abdirahman said of the blast.

Cash-strapped United Nations agencies could soon be forced to halt vital aid in Somalia despite warning signs the war-torn country could be sliding back into a food crisis, a top U.N. official said Friday.

"Essential life-saving projects are facing closure," warned Philippe Lazzarini, U.N. humanitarian coordinator in the country, pointing out that contributions to the Somalia appeal have dwindled.

Malaysian police are investigating whether al-Qaida linked Somali rebels were seeking to set up a base in the Southeast Asian country after a suspected insurgent was arrested, a source with knowledge of the investigation said Friday.

Police said on Thursday they detained a 34-year-old Somali man in Kuala Lumpur who was wanted by Interpol for alleged links to Shebab rebels blamed for a string of violent attacks in East Africa.