Striker Ferran Torres scored a hat-trick in the first 30 minutes to lead a dominant Barcelona to a 5-0 rout of Valencia in the Copa del Rey quarter-finals on Thursday.

Playing in his hometown against his boyhood club, Torres scored in the second minute from a quick counter-attack and doubled the lead in the 17th when he slotted home a rebound after Lamine Yamal's shot ricocheted off the post.

Fermin Lopez added a third on the counter-attack five minutes later and Torres gave Barca a four-goal lead on the half-hour with a shot from the edge of the area.

The visitors took their foot off the gas after the break, but Yamal added a fifth in the 59th minute with the help of Valencia goalkeeper Stole Dimitrievski, who made a howler when Yamal's shot deflected off his gloves and into the net.

Barcelona join Real Madrid, Atletico and Real Sociedad in the semi-finals, with the draw to take place on Wednesday.

Barcelona extended their unbeaten run to 10 games after another brilliant attacking display, and it was the second time in less than a fortnight that they have thrashed Valencia, who sit second from bottom and are fighting to avoid relegation, in a 7-1 LaLiga thrashing.

"I really wish Valencia the best of luck because outside the pitch I'm just another fan," Torres told TVE after deciding not to celebrate any of his goals out of respect.

"It's hard to see the club of your childhood, the club of your life suffer like this... seeing how they are going through such a hard time."