Kenya has warned its citizens about transiting through Heathrow Airport because of “a substantial threat of possible attack” by Al-Qaeda operatives, according to local media reports.
Hours after the British Foreign and Commonwealth Office (FCO) changed its travel advice for parts of the Kenyan coast following a spate of attacks that have left at least 87 people dead, the African nation's Foreign Affairs Principal Secretary issued the warning.
Karanja Kibicho told the Daily Nation newspaper: “According to information provided by US officials, Al Qaeda operatives in Yemen and Syria were developing sophisticated bombs that could bring down a plane."
He added: "The information states that Britain would be the most likely country to be affected. Based on this information, Kenyans are advised not to travel through London Heathrow where there is substantial threat of a possible attack.
The Foreign and Commonwealth Office (FCO) has changed its travel advice for parts of the Kenyan coast following a spate of attacks that have left at least 87 people dead.
A total of 22 people were killed in raids last Saturday in the village of Hindi in Lamu county, and Gamba in Tana River county, according to the Kenya Red Cross.
In June 65 people were killed when gunmen launched an attack in the coastal town of Mpeketoni.
The Somali militant Islamist group al-Shabab claimed responsibility for the attacks.
In the wake of the killings the FCO is advising against all but essential travel to Lamu county and the areas of Tana River county north of the Tana River itself.
Somali militants al Shabaab - the Islamist group behind the Westgate shopping mall in Nairobi - has claimed responsibility for Saturday night's raids on the Kenyan coast that have left at least 29 people dead.
The group said that it had broken into the police station at Gamba and freed suspects from the cells.
Their claim was supported by a Kenyan police source who said the group freed Muslim detainees, including some linked to the Mpeketoni two weeks ago that killed 65 people.
"There were two attacks in Lamu and Tana River last night. In Lamu we have nine people dead and in Tana River we have 20. The number could rise," ministry spokesman Mwenda Njoka said.
"They went around shooting at people and villages indiscriminately," Abdallah Shahasi, the area chief said.
The death toll in two separate attacks on the Kenyan coast overnight has risen to 29, according to the interior ministry.
At least 13 people were killed when attackers wielding guns raided two separate areas on the Kenyan coast overnight, the Kenyan Red Cross said.
Four people lost their lives at Hindi trading centre in Lamu county, near the scene of attacks in which 65 people were killed last month, the Red Cross said on Twitter.
Nine more people were killed in another attack in the Gamba area of Tana River county.
At least nine people have been killed in two simultaneous attacks on the Kenyan coast overnight, the Red Cross said.
Four people were killed when a cargo plane crashed shortly after take-off from the international airport in the Kenyan capital, Nairobi earlier today.
The Fokker 50 aircraft, which was transporting cargo to the Somali capital, Mogadishu, crashed into a residential building after taking off from Jomo Kenyatta International Airport, said the airport's head of police investigations.
No one on the ground was harmed, and the four bodies of those in the plane were recovered.
Five people have been killed by attackers who raided a village on Kenya's coast near Mpeketoni town where around 65 people died in assaults last week, a government official has said.
Somali militant group Al Shabaab claimed responsibility for last week's attacks on the Mpeketoni area, although Kenyan President Uhuru Kenyatta dismissed al Shabaab's account and said local politicians were behind it.
Speaking to Reuters Lamu County commissioner, Stephen Ikua said: "I am aware that a gang that is unknown attacked Taa village in Witu division yesterday (Monday) night and killed five people."
Two terrorist attacks on the Kenyan coast was not orchestrated by the al Shabaab terrorist network, according to the country's president Uhuru Kenyatta.
Mr Kenyatta said the 65 people were killed by "local political networks", dismissing claims by Somalia's al Shabaab Islamist group that it was behind the assaults.
Speaking to the nation, he said:
"This was not an al Shabaab terrorist attack. Evidence indicates local political networks were involved in the planning and execution of the heinous crime.
"This also played into the opportunist network of other criminal gangs," he said.
Somali-linked Islamist militants killed at least 15 people and torched houses in a second night of attacks on Kenya's coast, a day after an assault on a town left almost 50 dead.
Armed al-Shabaab militants stormed the Poromoko village at night, ordered people outside and made them recite the Islamic creed, one witness told Reuters. He did not see what happened to anyone who failed.
The militant group has said it is punishing Kenya for sending troops to Somalia to confront its Islamist fighters.
Sunday's assault on the town of Mpeketoni was the worst since al-Shabaab gunmen stormed Nairobi's Westgate shopping mall in September, leaving 67 dead.