Belgian police arrested 16 more people in late-night raids searching for those behind the deadly November 13 attacks in Paris, but failed to find a prime suspect as the government locked down the capital for a third day on Monday, November 23, according to Reuters.

Brussels will again see its metro and many shops closed, as well as schools, while offices in a city that is also home to the European Union and NATO are likely to have few staff after the prime minister warned of imminent Paris-style attacks.

Salah Abdeslam, the 26-year-old suspect from Brussels who has been on the run since he left Paris hours after his elder brother blew himself up at a cafe there, continues to elude a Europe-wide manhunt. A third brother, who was not involved, said Abdeslam may have thought better of going through with the killing. Belgian police fear he returned home to launch new attacks.

"What we fear is an attack similar to the one in Paris, with several individuals who could possibly launch several attacks at the same time in multiple locations," Prime Minister Charles Michel told a news conference early on Sunday evening.

Shortly afterwards, armed police backed by armored vehicles and helicopters stationed overhead began a series of raids in which 19 premises in Brussels and three in the industrial city of Charleroi, 50 km (35 miles) to the south, were searched.

Prosecutor Eric van der Sypt told a news conference early on Monday that no weapons or explosives were found and that a judge would review the detentions of the 16 arrested. In one incident, police fired on a car that was later found in Brussels, but it was not clear, van der Sypt said, if it was linked to the case.