British police say they have received a coded bomb threat from Irish Republican militants on the eve of Queen Elizabeth's historic visit to Ireland.

Scotland Yard officials said Monday the bomb threat related to central London, but did not include a specific time or place. Coded warnings have been a trademark of Irish dissidents.

Police closed off an area close to Buckingham Palace for several hours on Monday. Security officers were seen inspecting a dislodged manhole in central London.

Bomb disposal experts also blew up an abandoned suitcase in a controlled explosion.

Gunmen on motorcycles shot and killed a Saudi diplomat Monday in Pakistan's southern port city of Karachi.

Officials say Hassan al-Khatani was driving to work at the Saudi Arabian consulate when the attack happened. Khatani worked in the consulate's security office.

The Pakistani Taliban denied it was involved in the killing, which follows an attack last week in which grenades were thrown at the consulate building in Karachi.

Pakistani police are investigating whether Monday's attack is a result of sectarian violence between Sunni and Shi'ite Muslims.

In Nigeria, the last significant militant group in the oil-rich Niger Delta has called for a truce with the government, offering to disband and disarm in exchange for amnesty from prosecution.

The Nigeria Delta Liberation Force is a breakaway faction of the main group, MEND, and has been fighting government forces since its leader, John Togo, rejected the amnesty deal offered by the government.

Pakistani officials say two bomb blasts at a training center for local security forces in the country’s northwest have killed at least 80 people and wounded scores of others. TRhe Pakistani Taliban claim the attack is to avenge the killing of Osama bin Laden.

Local police say two suicide bombers used at least one motorcycle packed with explosives in an early morning attack in the town of Charsadda. The bombers detonated outside a regional base for Pakistan’s Frontier Constabulary, a security force that receives U.S. funds to combat extremists near the Afghan-Pakistan border.

Italy's foreign minister says he expects the International Criminal Court to issue an arrest warrant for Libyan leader Moammar Gadhafi by the end of May as the North African country's anti-government opposition received major political boosts from abroad.

Franco Frattini said Thursday that after the warrant is issued it would be impossible for Gadhafi to go into exile because the international community would then be obliged to pursue him.

Law enforcement officials in the U.S. state of New York say they have arrested two men suspected of planning a terrorist attack on a New York City synagogue.

News reports quoted authorities as saying the men were arrested in a sting operation in the city late Wednesday. They were said to be trying to buy guns and hand grenades. It appeared they did not have a specific synagogue in mind for the attack.

Officials said the two suspects are expected to be charged under New York state terrorism laws.

U.S. officials say Osama bin Laden's handwritten journal shows the al-Qaida leader urging his followers to focus on targeting the United States in a large-scale attack.

Media reports quote the officials, who spoke on the condition of anonymity. They say the notebook details al-Qaida's doctrine, potential targets and how to carry out attacks against them. It describes plots against the U.S. rail system and the importance of attacking the U.S.

Pakistani officials say a U.S. drone strike has killed at least five suspected militants in the country's northwest tribal region near the Afghan border.

The officials said missiles struck a vehicle Thursday in the Datta Khel area of North Waziristan. Some officials put the death toll as high as eight and said those killed included foreign militants.

The leader of al-Qaida in Yemen is warning the United States of more attacks in retaliation for last week's killing of Osama bin Laden in Pakistan.

In a statement posted on the Internet Wednesday, Nasser al-Wahishi tells Americans that the "ember of jihad is brighter" following bin Laden's death and that "what is coming is greater and worse."

The warning from the leader of al-Qaida in the Arabian Peninsula came as top U.S. Senator John Kerry announced he will travel to Pakistan next week to try and put relations with that country "back on track" after bin Laden's death.