Kenyan police have arrested 29 Ugandans suspected of seeking to join Islamist rebels in Somalia, a police spokesman said Sunday.

The suspects were arrested in Nairobi and were "undergoing interrogation," Eric Kiraithe told AFP. "Police are investigating them because they are believed to have been headed to Somalia to fight" alongside Shebab rebels.

Iranian authorities on Sunday hanged 12 people convicted of various serious crimes in the southern city of Shiraz, Mehr news agency reported.

Seven of those executed were found guilty of drug trafficking.

A South Korean fuel tanker sank Sunday after an explosion on board, leaving five crew members dead and six missing, the coastguard said.

The 4,191-ton ship carrying 11 South Koreans and five Myanmar citizens sank near Jawol island, about 32 kilometers (20 miles) off the western port of Incheon where the vessel had unloaded its cargo, a coastguard spokesman told AFP.

Hundreds of Romanians rallied in Bucharest on Saturday to protest against austerity measures and a planned health care reform, calling on President Traian Basescu to quit.

Chanting "Resignation" and "Fear Not, Basescu Will Be Toppled," the protesters marched towards the presidential palace, closely monitored by some 150 police.

The Sudanese military on Saturday denied bombing civilians in an operation which rebels said left 16 villagers and five government troops dead near the South Sudanese frontier.

Four rebels were wounded and "less than three" killed in the fighting, Mubarak Abdelrahman Ahmed, of the rebel youth wing in South Kordofan state, told Agence France Presse by satellite telephone.

Iran is looking at "punishing" those behind the assassination of one of its nuclear scientists, a senior military official said on Saturday, pointing the finger at the United States, Israel and Britain.

"We consider committing a terrorist act of killing a scientist to be a threat to the nation... We are looking at punishing those who were behind the scenes of the martyrdom (assassination) of Mostafa Ahmedi Roshan," the deputy chief of Iran's joint armed forces, Masoud Jazayeri, was quoted as saying by several media.

Pakistan President Asif Ali Zardari met the chief of the powerful army on Saturday for rare face-to-face talks amid a civilian-military standoff that is shaking the government, a spokesman said.

The unscheduled talks come against the background of shaky ties between Zardari's weak civilian administration and the military over a probe into a mysterious memo that sought U.S. help in curbing the army's power.

Pakistani security forces Saturday quelled a militant attack on a police station in which eight people were killed including four suicide bombers, one police and three civilians, police said.

The attackers targeted the main police station in Dera Ismail Khan city near the lawless tribal region, provincial information minister Mian Iftikhar Hussain told Agence France Presse.

Gunmen have attacked two pubs in northeastern Nigeria, killing four people amid a wave of such violence blamed on Islamist group Boko Haram, residents and police said Saturday.

The attacks occurred in two neighboring states on Friday night and involved gunmen riding on motorcycles storming in on the drinking spots.

Agents with Israel's Mossad agency posed as American CIA agents in operations to recruit members of the Pakistani militant group Jundallah to attack Iranian targets, a report in Foreign Policy magazine said Friday.

Using American dollars and U.S. passports, the agents passed themselves off as members of the Central Intelligence Agency in the operations, notably in London, according to memos from 2007 and 2008, said the report.