German authorities arrested three suspected Islamic extremists Wednesday on allegations they were planning a bombing attack, and searched properties in three states in connection with their investigation.

Federal prosecutors said Iraqis Shahin F. and Hersh F., both 23, and Rauf S., 36, were taken into custody in an early morning raid by a police SWAT team in the area of Dithmarschen, near the border with Denmark.

In addition, searches were carried out of other residences in northern and southwestern Germany of people linked to the three main suspects but not currently to the bomb plot.

Read more: Miami Herald