The police of German city of Essen conducted searches in neighboring Oberhausen city amid terror attack threats, detaining two people, the statement issued on Saturday said, Sputnik reported.
Earlier in the day, the police closed a shopping mall in Essen amid security concerns over a possible terror attack.
"Since 13:30 [12;30 GMT] the police have been conducting searches in an apartment in Oberhausen. The owner is currently being questioned. Police detained another man at 14:10 [13:10 GMT] in an Internet cafe in Oberhausen. The police will also question him and conduct searches in his apartment," the police said on Facebook.
Germany has been on edge after a string of Islamist-linked attacks last year, the deadliest being the truck-ramming of a Berlin Christmas market. The self-confessed Daesh (outlawed in Russia) terrorist group member, Anis Amri, drove a stolen truck into a crowd, killing 12 people and injuring 48 others.