Belgium on Lockdown as Parisian Terrorist Remains At Large

One suspect from the deadly Paris attacks is at large, and was last seen crossing in Belgium's capital city, which is now on a high security lockdown.

Subways in Brussels are closed and heavily armed police and soldiers are deployed as the government warns of a repeat threat of the Paris terror attacks.

Residents were recommended to avoid gatherings, train stations, airports and commercial districts. Service was halted on the Brussels Metro, as well as on streetcar lines that run underground.

Belgium's national Crisis Center raised its terrorism alert for the Brussels to a Level 4, indicating a "serious and immediate threat."

In a press conference, Prime Minister Charles Michel said the government has "quite precise information about the risk of an attack like the one that happened in Paris" He said the fear was that "several individuals with arms and explosives could launch an attack ... perhaps even in several places at the same time."

At least one Paris attacker, Salah Abdeslam, crossed into Belgium the morning after the attacks. A Paris police official and the Paris prosecutor's office said  they had no firm information on Abdeslam's whereabouts, including whether he was in the Brussels area.

Three other suspects were arrested in Turkey who may have had ties to the Islamic militants who planned the attacks in Paris. One suspect, Ahmad Dahmani, 26, is believed to have scouted target sites for the Paris attacks.

The Associated Press reports that authorities across Europe, the Mideast and in Washington are trying to determine how a network of primarily French and Belgian attackers with links to Islamic extremists in Syria plotted and carried out the deadliest violence in France in decades - and how many may still be on the run.

Michel said that Belgium's crisis cell will meet again on Sunday afternoon to reassess the threat.

He urges "the public not to give in to panic, to stay calm. We have taken the measures that are necessary."