Spain and Morocco have promised to work together to tackle the problem of illegal immigration to the Spanish enclaves of Ceuta and Melilla in North Africa. The deputy prime minister of Spain, Maria Teresa Fernandez de la Vega has been visiting Melilla.Prime Minister Jose Luis Rodriguez Zapatero declared that one could question whether it was right to shoot people who were literally leaving their skin on the border fence as they try to get into Spanish territory. In the latest incident, six people were killed during an attempted mass break-in from the Moroccan side. Spain has discussed with a number of African countries how to tackle the wave of immigration which has been putting a severe strain on the enclaves. Local authorities in the Spanish territories are finding it difficult to cope with the large number of people who have managed to get over the security barriers.