A suspect, who the Belgian authorities had flagged to their French counterparts over possible involvement in Thursday's Paris shootings, turned himself in to police in Belgium's northern city of Antwerp, news agency Belga said on Friday.

Also Read Paris police shot on Champs-Elysees; IS group claims attack

Speaking on France's Europe 1 radio after the shootout on the Champs Elysees shopping street, French Interior Ministry spokesman Pierre-Henry Brandet said a second man had been identified by Belgian security officials and brought to the attention of French authorities.

Meanwhile, three family members of the gunman who was killed after the Champ Elysees attack have been detained by the French police for further investigation.