Five people were dead after a Flixbus veered to the right of the busy A9 motorway, local media reports
Migrant workers were hidden behind large bundles of clothes at the factory in Murcia, southeastern Spain, which sold clothes to African countries, police video footage showed.
A father and his two sons, who were not named, have been arrested. The monthly minimum wage in Spain is 1,050 euros.
The three suspects will appear in court on Saturday. ($1 = 0.8257 euros)