German authorities arrested on Tuesday a Syrian youth on suspicion of plotting a bomb attack.
The Syrian, 19, was arrested in the northeastern city of Schwerin where security agencies had carried out several raids, including in the region north of Berlin.
The counter-terrorism prosecution said that the suspect had planned an extremist-driven attack in Germany with very powerful explosives.
It was not yet known if the detainee had already set his target, said the prosecution.
It added that it has not yet been determined if he belonged to a terrorist organization.
It revealed however that he had taken the decision in July 2017 to detonate a bomb in Germany for the purpose of killing or injuring the greatest number of people.
In the next two weeks, he started to acquire the material needed to build his bomb.