At least 10 people have been killed and scores more injured in twin explosions in the Kenyan capital, Nairobi.

The blasts hit a market close to the city centre and a minibus used for public transport nearby.

There was no immediate claim of responsibility but previous such attacks have been blamed on the Somali Islamist militant group al Shabaab.

It wants Kenya to end its military intervention in Somalia. Last September the group killed 67 people in an attack on a shopping centre in Nairobi.

The violence has had a devastating impact on Kenya’s tourist industry.

Speaking shortly after the explosions, in a previously planned news conference, Kenyan President Uhuru Kenyatta said: “We, as a country, must move on. We must do what we can. We shall endeavour to do what we can. We will continue to market our country to other destinations, to continue to call on our own citizens to be supportive of our hospitality industry which is amongst the best in the world.”

But as he spoke, hundreds of tourists were flying home from Kenya’s coastal town of Mombasa after travel warnings were issued by Britain, the US, France and Australia.

Regular visitor Judy Sharp, a Briton, expressed concern for those the holidaymakers were leaving behind.

“The Kenyan people are absolutely brilliant and it is such a shame that we have to cut our holiday short because of other people,” she said at the airport.

“We feel for the people we have left at the hotel, who work there. We are so sad for them.”

Kenya’s president though reiterated the country’s criticism of the travel warnings, suggesting that they simply strengthen the will of the terrorists.