Schools and many metro stations reopened on Wednesday after being closed for four days in the Belgian capital, following a manhunt by security forces to catch suspects allegedly involved in the Paris attacks.
However, the city will retain its maximum security alert until at least next Monday, with additional 300 police officers and 200 soldiers on patrol.
The public transport was relaunched at 0600 GMT, though only 35 stations out of 69 are currently running.
Brussels was put under a big security lockdown last Sunday, as it was revealed at least one of the Paris suspects had lived in Brussels. Authorities feared their could be attacks similar to the one’s in Paris which DAESH terrorist organisation had claimed responsibility for, killing 130 people and injuring hundreds of others on November 13.
Belgian Foreign Minister Didier Reynders said security forces were searching for nearly 10 suspects who are thought to be involved in planning attacks across the city.
More than two dozen people have been detained in Brussels since the series of attacks in Paris took place, but all of them were released except five, as at least one suspected attacker is still on the run.
Following the deadly attacks in Paris, France had declared a three-month national state of emergency and stepped up its air campaign against DAESH, targeting the terrorist organisation’s spots in Syria.