A luxury hotel is under attack in Kenya's capital Nairobi.
At least two explosions and gunshots were heard at the building, which is located in the Westland district.
Somalia-based militant group al-Shabab claimed responsibility for the attack, but did not provide details.
Meanwhile, a witness said that four armed men entered the building.
People who have been in the area are being evacuated with the help of heavily armed officials.
There is still no information on casualties, although medical teams are at the scene.
A woman who works in a building near the hotel told the Reuters news agency: "I heard the shots and then I saw people running and raising their hands and entering a bank to escape the attack." .
also
Attack on a hotel in the capital of Somalia
Kenya has faced a string of terrorist attacks in recent years, especially in areas close to the border with Somalia.
In September 2013, al-Shabab militants stormed a shopping mall in Nairobi and targeted shoppers, killing 67 of them.
Al-Shabab is a militant Islamist group that opposes the Government of Somalia, but also carries out attacks across East Africa.
