Paris St Germain needed a last-minute equaliser to snatch a point at struggling Caen, but still extended their lead at the top of Ligue 1. PSG scored a 90th-minute winner to beat Dijon last time out and left it late again as Christophe Jallet scored their second equaliser. Pierre-Alain Frau put Caen in front for the first time in the 54th minute only for Javier Pastore to level two minutes later. Thomas Heurtaux restored the hosts\' lead in the 70th minute, but they could not hold out and Jallet netted to send PSG two points clear of Montpellier, who lost at Nancy. Caen came flying out of the blocks and Livio Nabab chested the ball down to Frau, who crashed a shot off the bar. Gregory Proment brought a save out of Salvatore Sirigu with a low shot after PSG failed to properly clear a corner and Romain Hamouma also tested the visiting keeper with a curling effort as Caen continued to threaten. PSG\'s first sight of goal arrived in the 30th minute when Pastore freed Siaka Tiene down the left and he fired just over. Caen kept up the pressure after the break, Nabab nipping between two defenders and blasting over. And they took a deserved lead through Frau, who scored at the second attempt after Sirigu had blocked his first shot from Nabab\'s cross following a Caen counter-attack. The capital club levelled almost immediately, Pastore neatly netting a rebound after the ball bounced back to him. PSG were suddenly in their stride and Kevin Gameiro hammered a shot against the bar, while Caen keeper Alexis Thebaux denied both Milan Bisevac and Jallet. But with PSG looking likely to go on and get a winner, Caen went back in front, Heurtaux rising above Alex to head home. Carlo Ancelotti\'s side were not beaten, though, and Jallet controlled a Jeremy Menez cross on his chest at the near post before firing home on the half-volley to earn them a point.