Rob Wainwright, head of the European Police Office (Europol), said at a meeting of interior ministers that the Islamic State had “developed a new combat-style capability to carry out a campaign of large-scale terrorist attacks on a global stage, with a particular focus in Europe.” Apart from “lone wolf” attacks, Europe increasingly faces the prospect of large-scale, organized, mass terror attacks, according to the agency.

The meeting in Amsterdam was held amid heightened fears of terror attacks on European capitals similar to the ones in November in Paris. On Sunday, the Islamic State released a video that featured the Paris attackers and included footage showing some of them executing hostages.

“Expect a mujahid to show up to kill you,” the alleged ringleader of the Nov. 13 Paris attacks, Abdelhamid Abaaoud, said in the video. Abaaoud was killed during a shootout with police in a Parisian suburb days after the attacks.