Two Britons have reportedly been arrested by police in Kenya.
A Foreign Office spokesman, who said he could not give further details of the incident, said: "We are looking into reports of two British nationals detained in Kenya.
"We stand ready to offer consular assistance."
Sky News quoted sources suggesting that the pair, who were detained in a beach resort on the country's south coast, had been carrying hand grenades.
Local media said the arrests had not yet been confirmed by the authorities.
The arrests come months after a terror attack o n a Kenyan shopping centre which lasted four days and left 67 people dead, including six Britons. The al Qaida-linked Somali Islamic extremist group al-Shabab has claimed the assault.
At one point Kenyan authorities said a woman might have been involved in the attack, prompting speculation that British terror suspect Samantha Lewthwaite - who was married to July 7 bomber Jermaine Lindsay - might have had some connection with the attack.
Dubbed the ''White Widow'', Lewthwaite is known to be in East Africa and is wanted over alleged links to a terrorist cell that planned to bomb the country's coastal resorts. Interpol issued a notice asking for help in capturing the 29-year-old fugitive over the 2011 plot.