Al-Shabaab, which has said its mujahideen were responsible for the assault, has launched a series of terrorist operations in Kenya in recent years. The news of the warnings will embarrass authorities in Kenya, which is seen as a key local counter-terrorist player by the US, UK and other western powers. Play Video 0:42 Amateur footage captures people escaping Nairobi terror attack – videoThe officials spoke on condition of anonymity because they were not authorised to speak to reporters. “This [recent] Nairobi attack is a response first and foremost to the airstrikes. Earlier this week, al-Shabaab media reported the group had executed an Isis commander in Somalia.

Source: The Guardian January 16, 2019 08:59 UTC