Denmark has banned all civilian drone flights this week ahead of a European Union summit in Copenhagen.
The country’s transport minister says the decision was made in order to “simplify security work” for the police, and they could not accept “foreign drones creating uncertainty and disruption.
Defence ministers from 10 EU countries have agreed to create a “drone wall” in response to the sightings, and Nato says it has “enhanced vigilance” across the Baltic.
The ban will remain in place until 3 October, and violations could result in a fine or imprisonment for up to two years.