OVER 500 people gathered in the town hall square in Móstoles (Madrid) last night to express their solidarity with the family of missing Sevilla teenager Marta del Castillo Casanueva. Marta, 17, disappeared a week ago afer she had gone out to meet her friends at around 17.00hrs. One of Marta’s friends said she left the missing youngster at the door of her house at 21.30hrs, but Marta's mother and father say she never returned home. Described by her family as a responsible girl who was never late home and rarely rowed with her parents, the teen is said to be 5’5” tall with long, dark blonde hair and green eyes. On the night of her disappearance she was wearing a black jacket and jeans. During last night’s concentration in Madrid, members of the public and relatives of Marta who reside there carried banners proclaiming, “Marta, we are all searching for you. Come back soon,” and “Your family in Madrid loves you.”