Domingos Serrano, 55, Maria Serrano, 51, and their twin sons Domingos and Afonso, both 20, died when the car they were travelling in collided with another vehicle in Castro Verde, southern Portugal, according to the Municipal Council for Mourao. Two others died in the crash - the 19-year-old girlfriend of one of the sons, and the 26-year-old driver of the other car, its statement added. The Serrano family were living in Thetford, Norwich, but were not British nationals, Sky News understands.