Gunmen were holding at least 20 people hostage in a restaurant in Somalia’s capital Mogadishu, police said, after a suicide bomber rammed a car into a hotel next door and militants stormed inside in an attack claimed by al Shabaab militants.

Police cordoned off the whole district surrounding Mogadishu’s pizza house, which is adjacent to the posh hotel where the suicide bomber attacked first, witnesses said. Posh hotel is the only venue with a discotheque in the capital.

Earlier, police said nine people, mostly women who were hotel staff, had died in the attack.

Security officials said the suicide attacker had rammed the explosive-laden car into the hotel’s entrance before gunmen stormed the restaurant.