Belgium police. Photo: Wikipedia.

In the wake of the bombings in Belgium this week — and increasing criticism of officials for their inability to thwart those attacks — police in the last 24 hours have made at least four arrests in a series of raids in Belgium and four other countries across Europe.

New evidence shows disturbing evidence of just how big the terror network is across Europe.

CBS News‘ Allen Pizzey reports from Brussels that, as the effort to break the terrorist cell that carried out the bombings goes on, Belgian officials are coming under increased scrutiny and criticism for what is being seen as a series of intelligence failures.

Read full story at CBS News.