Swiss police say they have detained a German man in connection with a backpack filled with fake pipe bombs found near the route of a large techno music parade in Zurich on Saturday.

Zurich cantonal (state) police said Monday that the 31-year-old suspect, who lives in Switzerland, was the alleged owner of the backpack.

The suspect, whose name wasn't released, was detained late Sunday at his home in the neighboring canton of Aargau. A 35-year-old Swiss man who was initially held in the case has been released.

Read more: ABC News