At least four people are said to have died after a suspected terrorist attack on a luxury hotel in the Kenyan capital Nairobi.<br />The Somalia-based militant group al-Shabab said it was behind Tuesday's attack.<br />Officials fear the death toll could rise and Kenyan security forces are battling to retake control of the Dusit hotel compound.<br />Explosions and gunshots could be heard at the scene. <br />One of the blasts is believed to have been a suicide bombing in the hotel lobby.<br />The al-Qaida-linked Al-Shabab has vowed retribution against Kenya for sending troops to Somalia since 2011.<br />
