Here are the latest developments:
Belgium: Armed soldiers patrol cities
Heavily armed guards filtered through the streets of Brussels and Antwerp on Saturday, a sight the country hasn’t seen in 35 years.
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Greece: The latest country on alert
Greek police said they are conducting an investigation in connection with the Belgian terror plot. A police spokesman would not specify whether anyone had been taken into custody, saying, “We are not in a position to comment at this point.”
CNN’s Ivan Watson reported from Brussels; Holly Yan reported and wrote from Atlanta; and Tim Lister reported from Paris. CNN’s Laura Smith-Spark contributed to this report.
