Belgium's foreign minister tells ABC News that the country's primary concern right now is to find about 10 individuals whom Belgium authorities believe could launch a Paris-like attack with "heavy weapons" and "suicide bombs."
Foreign Minister Didier Reynders said the "heavy weapons" might be Kalashnikovs or "maybe more than that."
He also said intelligence seems to indicate that commercial centers and shopping malls are targets -- not schools or metros.
"The most important threat is on some shops and some shopping centers...more shopping centers and other kinds of commercial activities," he said. Schools and subways in Brussels are currently closed but are set to reopen Wednesday.
Reynders said officials have received a tremendous number of tips about suspected attacker and fugitive Salah Abdeslam, who authorities said fled the scene in Paris and returned to his hometown in the Brussels area the morning after the shooting. But Reynders said he is confident Abdeslam will be captured.
He also said that while intelligence sharing among countries is improving, it’s still not enough.
"It’s impossible to say that we had 130 dead people or more in Paris and it was a success for all the services, for the security services," Reynders said. "We need to do more and more."
Brussels will remain on the highest level terror alert through next Monday, Belgian's prime minister said Monday.
Meanwhile, a spokesperson for Paris' prosecutors office told ABC News that a second person was seen on a Paris subway with the attacks' presumed mastermind, Abdelhamid Abaaoud, on the night of the attacks.
More than 300 people were injured in the Paris attacks and 161 remain in the hospital, including 26 in intensive care or resuscitation, French Health Minister Marisol Touraine said today.
French Interior Minister Bernard Cazeneuve said today that police have conducted over 1,000 searches and raids in France since the country's state of emergency was implemented. One-hundred sixty five people have been detained and 230 weapons have been seized, said Cazeneuve.