The German police arrested 10 people on suspicion of planning a terror attack, an official said.
Spokesman for prosecutors in Duesseldorf said the suspects were taken into custody on Friday and Saturday, DPA reported.
He was quoted as saying on Saturday that the group is suspected to be linked to ISIS, either as sympathizers or a splinter group.
The men are also suspected of planning a "serious act of violent subversion," however, according to the Associated Press, there is currently no indication of a specific target.
It's not official yet if criminal cases would be brought against all those taken into custody.
Officials said one of the suspects was from Tajikistan but provided no information about the nationality of the others.
Germany has been on high alert following several terrorist attacks in recent years.
