A total of 22 raids were carried out on Sunday across Brussels and Charleroi, Belgian prosecutor Eric van der Sypt told a news conference.
Police fired two shots at a car during an operation in Molenbeek, injuring one suspect who was later arrested.
More than 130 people died and some 350 were injured in the attacks in Paris.
No weapons or explosives were found during the searches on Sunday, Mr van der Sypt said.
Brussels will remain on the highest level of terror alert, Belgium's Prime Minister Charles Michel said. Universities, schools and the city's metro system will also remain shut.
Brussels has been on lockdown all weekend amid a manhunt for Abdeslam, who is suspected of being among the assailants who killed 130 people in Paris on Friday.
-BBC