A suicide bomber in army uniform killed more than 90 soldiers in Yemen during a the rehearsal for a military parade.
An undercover agent who foiled an al-Qaeda plot to blow up an airliner with an underwear bomb is a British national.
It seems the man who foiled al-Qaeda's latest underpants bombing plot was a Saudi intelligence agent.
A Yemeni air force plane crashed in the capital Sanaa today killing at least 12 people, Reuters reported, citing security sources.
Yemen's state news agency Saba claimed three women and two children were among those killed when the aircraft, on a training flight, crashed in a western residential district.
A security official said the pilot had ejected from the plane but could not confirm whether he had survived.
"It's terrible and painful," local resident Abdullah al Ashwal told the news agency. "The police and medics evacuated five completely burned bodies, they were all unrecognisable".
Abdulsattar Mohammed said he saw a plane burning near houses that were also set on fire, adding, "People were terrified and ambulances arrived late".
A military official said the plane was a Russian SU-22 fighter/ground attack aircraft.
A Yemeni fighter jet crashed in the centre of the capital Sanaa today killing at least six people, Reuters reported, citing medical sources.
The country's Interior Ministry said the plane had been on a training flight when it crashed in a western residential district.
A security official said the pilot had ejected from the aircraft, which a military official described as a Russian SU-22, the report states.
A Yemeni security official has told the Associated Press that a car bomb has killed 11 soldiers in central Yemen.
Al Qaeda-linked militants in Yemen have pledged to give three kilograms of gold - worth around £100,000 - to anyone who can kill the US ambassador in Sanaa.
An audio message posted on militant websites also offered around £15,000 for the head of any American soldier found fighting in the country.
A statement from the al Malahem Foundation, reported by the Associated Press, said the bounties would be valid for six months and were issued to "inspire and encourage our Muslim nation for jihad."
Three al-Qaeda militants were killed in a suspected US drone strike in southern Yemen, Yemeni security officials said, the fourth such attack this week.
The officials said the three men were hit as they were travelling in a vehicle in el-Manaseh village on the outskirts of Radda in Bayda province.
Earlier this week another suspected US drone strike killed two militants in Radda itself, Yemeni security officials say, and seven were killed in two other strikes in the south-eastern province of Hadramawt.
Four suspected drone strikes a week is uncommon in Yemen.
A Saudi diplomat has been shot dead in Sanaa, Yemen, according to Al-Arabiya news.
Yemen military officials say suicide attackers have killed nine soldiers in an assault on an army base near the coast.
Security forces in Yemen have killed Said al-Shihri, described as the second-in-command of al-Qaeda in the Arabian Peninsula (AQAP), government officials have reported.
Yemeni officials said that al-Shihri was killed in an airstrike in the Wadi Ain area of Hadramawt.
A gunman has fired at worshippers celebrating the end of the Islamic religious month of Ramadan in southern Yemen, killing nine, according to reports.
He targeted men praying outside a busy mosque in al-Dhale, which is around 115 miles south of the capital, Sanaa, during morning Eid el-Fitr services. Nine people died and a further 10 were injured, officials said.
The gunman was arrested at the scene.
Around 100 people have been killed in similar mosque shootings in Yemen in the last three years by people thought to have mental problems or in tribal wars, say officials.
The suicide attack that killed at least 45 people and wounded dozens more struck a funeral of the head of a group of tribal fighters that sided with the Yemeni army during the offensive that drove al Qaeda-linked militants from their strongholds in the souther province of Abyan.
Abyan governor Jamal al-Aqel condemned the attack and said an investigation was under way.
This is a cowardly, criminal, terrorist attack
The attack highlights the enduring threat of Islamist militancy in Yemen and may alarm the United States and Saudi Arabia, which increasingly views the impoverished state as a front line in their war on al-Qaeda.