Hannover Airport was temporarily closed following the discovery of explosives at a cargo centre, according to reports.
Employees at the UPS depot alerted authorities after finding the item.
Passengers on flights to Hannover's Langenhagen Airport were diverted.
One, Adam Nicholls, detailed the consequences.
“Just landed back at Heathrow Airport after Hanover Airport got shut down due to a suspect package, after we had circled over head for 30 minutes,” he said.
The airport reportedly opened later after security officials detonated the suspicious package.
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