Danish police have closed two major bridges to traffic and halted ferry services from Denmark to Sweden and Germany in a major operation, the Copenhagen police said on Twitter on Friday.

Større politiaktion i gang.

Derfor er broer lukket og færger ml Rødby- Puttgarten og Gedser-Rostock og Helsingør-Helsingborg lukket.

Mere info følger her.#Politidk — Københavns Politi (@KobenhavnPoliti) September 28, 2018

The Danish police gave no immediate explanation for their actions in a tweet. They have shut down the Oresund Bridge, which connects Denmark to Sweden, and the Great Belt Bridge that links the Danish islands of Zeeland and Funen.