A fourth tribe, the Frisians, some of whom almost certainly came to England, occupied a narrow strip along the coast from the Weser to the Rhine, together with the islands opposite. But by the time of the invasions the Jutes had apparently moved down to the coastal area near the mouth of the Weser, and possibly also around the Zuyder Zee and the lower Rhine, thus being in contact with both the Frisians and Saxons.