<span style="color: #222222;">Heavy gunfire has been heard in Sudan's capital, Khartoum, as security forces forcefully moved in to clear a protest camp that has been the central point in the demonstrators' months-long struggle for civilian rule.</span><br />'' <br />'' <span style="color: #222222;">The Central Committee of Sudanese Doctors, a medical group linked to protesters, said at least five people were killed and several wounded in the Monday morning raid, which was still in progress.</span><br />'' <br />'' <span style="color: #222222;">In a post on Twitter, the Sudanese Professionals Association  said the country's ruling Transitional Military Council  had assigned a large number of troops to disperse the protest camp.</span><br />''  <br />