The Somali militant group al-Shabab has claimed responsibility for killing 36 people early Tuesday in the country's northeast. The attack happened at a quarry near the town of Mandera where witnesses say gunmen struck as workers were sleeping in their tents. An al-Shabab statement said its fighters had killed what they called "Kenyan crusaders" and was punishing Kenya for sending troops to fight in Somalia. For more VOA's Gabe Joselow joins VOA’s Vincent Makori live via Skype from Nairobi.