KHARTOUM - Sudan's security services have freed a resident of the United States who was re-arrested just after being released in one of the first trials of people detained in anti-government protests, his lawyer said on Friday.The United States had demanded the release of Radwan Daoud who was re-arrested by security agents on Monday, the same day a judge found him not guilty of the most serious charges against him, which included forming a terrorist organization.Agents had initially arrested Daoud, whose origins are in the western Darfur region, last month in a house in Khartoum where authorities said they had found material calling for protests and regime change."He was freed last night," his lawyer Abdelmoneim Adel Mohamed told Reuters.