A French campaign group is urging the country's authorities to take action against homophobic and racist chanting by Paris Saint-Germain fans after the match against Marseille was marred by discriminatory singing.

Paris St Germain took another big step towards the Ligue 1 crown with a 3-1 home win over second-placed Olympique de Marseille on Sunday to extend their lead at the top to 19 points. PSG are unbeaten in the league and cruising towards the title with 68 points from 26 games and eight rounds remaining.

Paris Saint-Germain remain on course for a historic unbeaten season in Ligue 1 after a 3-1 win over bitter rivals Olympique de Marseille in Le Classique on Sunday opened up a 19-point lead with 26 games played in France's top flight.