The Vektan Slums are the poor district of Vekta City.
Rico Velasquez lived his life here as a young boy helping his mother. Jan Templar and his comrades explore the slums during a mission where they have to find the half Helghast spy known as Gregor Hakha. While searching for Gregor Hakha they encounter the a squad of dead RRF soldiers in a shopping mall. Among them they find a severely wounded Sanchez who dies shortly after telling them where Gregor Hakha went.
The multiplayer version of this map is almost identical to the campaign version. Plenty of posters can be seen on display around the slums promoting different companies and resorts.