Four gunmen took a hostage in an apartment in the Belgian city of Ghent on Monday, the state prosecution service said, adding that it had no indication that it was a terrorist act.

Police were called after the four armed men were seen entering a building in the Dampoort district of the city on Monday morning. A spokeswoman for prosecutors said that the four had taken a man hostage there.

“For the time being we have no indication that there is a link to terrorism,” she said.