Threat posed by militant group 'will not shake resolve'

The spokeswoman for the White House National Security Council Caitlin Hayden has said the US is offering assistance to Kenyan authorities after gunmen killed 39 people at a mall in the Kenyan capital Nairobi.

We extend our deepest condolences to the families and loved ones of those who have been killed or injured, including the American citizens who were injured and the staff of our Embassy in Kenya who were tragically affected by this attack.

We will continue to stand with the Kenyan people in their efforts to confront terrorism in all its forms, including the threat posed by al-Shabaab. This cowardly act against innocent civilians will not shake our resolve.