The first group of six political prisoners freed by Cuba has arrived in the Spanish capital, Madrid. They are the first of 52 detainees to be set free under a deal brokered last week by the Catholic Church and Spain. <br/><br/>Under the agreement, the Cuban government has agreed to release all 52 political prisoners in the coming months. <br/><br/>All were part of a group of 75 dissidents rounded up in 2003 and sentenced to jail terms of between six and 28 years. The other 23 have already been freed. <br/><br/>Spanish officials say they will not be required to stay in the country and will be free to head elsewhere. Both the US and Chile have offered them asylum.