St Etienne kept their hopes of European qualification very much alive with a thumping win at struggling Caen in Ligue 1 this evening.
Pierre-Emerick Aubameyang scored twice after the break as the visitors stayed a point behind Rennes, who moved up to fourth.
Aurelien Montaroup's own goal put St Etienne in front late in the first half and goals from Aubameyang and Max-Alain Gradel after the break had them three up.
Livio Nabab pulled one back for Caen, but Aubameyang wrapped up an impressive win for the visitors to leave their opponents a point above the drop zone.
St Etienne started well and Bakary Sako sent Aubameyang through on goal, but the striker's shot from just inside the area came back off the bar.
Fabian Lemoine was then off target with an attempted lob before Caen had their first sight of goal.
Frederic Bulot met M'baye Niang's right-wing cross at the far post, but his effort with the outside of his boot was tame and did not trouble goalkeeper Stephane Ruffier.
But St Etienne got the opening goal in the 39th minute as Montaroup turned Aubameyang's dangerous cross into his own goal.
Half-time substitute Kandia Traore missed a golden chance to level early in the second half, missing from the rebound after Ruffier had saved from Bulot.
And, a minute later on the hour mark, St Etienne doubled their lead.
Aubameyang finished off a counter-attack by lobbing keeper Alexis Thebaux, who got a hand to the ball but could not keep it out.
Niang then failed to hit the target with the goal at his mercy from a Nabab cross, and again the visitors made them pay.
Gradel got the third in the 70th minute, scoring with an easy finish after the ball broke to him when Thebaux challenged Aubameyang in the area.
Caen pulled one back a minute later, Nabab making no mistake after Ruffier had pushed Niang's shot into his path.
But St Etienne killed off any hope of a dramatic comeback as Aubameyang added a fourth in the 82nd minute, heading home from a Gradel cross.