A spokesman said: "We are dealing with two men and two women, all from Eritrea.
Midkamida Odoyada ayaa yidhi waxaan aanu leenahay wax qabso wax halagula qabtee markaa waxaan ka codsanaynaa Cidkasta oo naga Caawinkarta dhismaha qaybaha uu ka koobanyahay Dayrka iyo labo qol oo dumarka umulaya ladhigo,