Arsene Wenger takes sides after Diego Simeone and Jurgen Klopp's touchline row

Arsene Wenger has defended Diego Simeone after he snubbed Jurgen Klopp's handshake on Tuesday night insisting "something must've happened".

The Atletico Madrid boss saw his side lose 3-2 to Liverpool at the Wanda Metropolitano in the Champions League.

The Spaniards went two goals down early on, then levelled the contest before Mohamed Salah notched the winner from the spot.

Simeone watched on as the game was marred with controversial moments, including a red card for Antoine Griezmann and an overturned penalty.

The Argentine, known for wearing his heart on his sleeve, immediately ran down the tunnel at full-time as Klopp gestured towards him.

Diego Simeone ran down the tunnel at full-time in Madrid

But Wenger knows full well how emotional it can be in the dugout and didn't see the incident as a big deal.

"It's not always peace and love on the bench," he told beIN Sports. "Overall, I must say that something happened there. He did not only not greet, but he ran inside.

"That means he was determined not to shake hands and that means something happened.

"The good thing is that it's repairable because it happens sometimes that you have an exchange of words and six months later you meet each other and you sort it out."

Klopp and Simeone will meet again in a couple of weeks when Atletico return to Anfield for another European encounter.

The Spanish side were triumphant on their last visit to Merseyside, but need a result to ensure they qualify from their group.

The Liverpool manager insists there will be no problem with his opposite number when they meet.

"The situation is clear I wanted to shake his hand, he didn't want it," Klopp told BT Sport of the incident after the match.

"His reaction was for sure not right, mine was not too cool either but we are both emotional.

HAVE YOUR SAY! How far will Liverpool go in the Champions League? Comment below

"When I see him next time we will shake hands, definitely. He was obviously angry, not with me, but the game, the world and stuff like this."

Simeone has clarified why he chose not to shake Klopp's hand after the defeat.

"When I'm angry, I respect the situation," he told reporters in a press conference after the match.

"I have no problem, I just tend to do that when we lose and I'm not happy."

Mohamed Salah made history in Liverpool's away day success after he scored the opener and the winner.

His first strike, which was awarded to him despite it taking a deflection, saw him become the first man in the club's history to score in nine straight games as his sensational form continues.