An important piece of history has been lost in Uganda. Fire destroyed a 150-year-old royal tomb in Kampala on Tuesday. It's not clear who or what caused the blaze. What is clear that the thatched-roof mausoleum, called the Kasubi Tombs, was an object of deep reverence by Uganda's largest tribe, the Buganda. In fact, it was a UNESCO World Heritage Site. Jeb Sharp talks with the BBC's Joshua Mmali is in Kampala.