COPENHAGEN (Reuters) – Police made several raids throughout Denmark on Wednesday and arrested a number of people in connection with suspected preparations for an Islamist militant attack, police said.

Police and intelligence services will hold a joint news conference at 1600 GMT to give more details.

Denmark has not seen a militant attack since 2015, when two people were killed and six police officers were wounded.

In that incident, a lone gunman shot and killed a man outside a culture center hosting a debate on freedom of speech, and later killed a person outside a Jewish synagogue in central Copenhagen. The gunman was killed in a shoot-out with police.

This year, the Danish government imposed temporary border controls at its border with Sweden following the bombing of the Danish Tax Agency in Copenhagen, which led to the arrest of three Swedish men.

Reporting by Nikolaj Skydsgaard and Andreas Mortensen; Editing by Angus MacSwan