Barcelona hero Sergi Roberto says he didn't know if his winning goal would count as the Catalans hammered PSG.

The midfielder scored the sixth goal in the 6-1 win as Barça became the first side to turn around a four-goal deficit in the Champions League.

"I've thrown everything. I didn't know if I was onside. I'm very happy," Roberto told BeIn Sports after the game.

"I threw myself on the ground and I saw the goalkeeper [Kevin Trapp] didn't stop it."

Praising the Camp Nou crowd, he added: "They say the fans are one more player, but today they were 10 more.

"In the end, this is also for them. Now to celebrate and think about the league game [against Deportivo La Coruna on Sunday]."