A man was arrested in Denmark on Saturday in connection with a bomb threat at Billund Airport, the country's second-largest aviation hub, police said in a statement, Azernews reports.

The airport, in central western Denmark, was evacuated and remains shut following the threat.

"The evacuation has proceeded calmly and as expected, with travelers following our instructions," police inspector Michael Weiss said in a statement.

Investigations into the incident are continuing, the police said, adding it was not clear when the airport would reopen.