The 32-year-old detainee lived in the West German state of North Rhine-Westphalia, which is home to large Arab and Muslim immigrant populations.
According to the prosecution in the capital city of the district state, Dusseldorf, the Iranian detainee was preparing to carry out an attack of an "Islamist" nature.
Dusseldorf.
The capital of the country where the Iranian lived, photo: Getty Images
To carry out the attack, he purchased toxic chemical substances, including hydrogen cyanide and ricin.
The German prosecution arrested him on suspicion of "preparing a serious act of violence, which posed a threat to the security of the state."
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