Vitor Pereira inadvertently kicked the ball away out of ‘frustration’ at an official before being sent off against Brighton.The assistant to the Wolves boss confirmed the reason for Pereira’s red after some mystery surrounding his dismissal during Sunday’s 1-1 draw at Molineux.GettyPereira’s assistant has apologised on his behalf after he was sent off against Brighton[/caption]Pereira was shown a red card by referee Jarred Gillett just 21 minutes into the match.An explanation from the PGMOL moments after the incident read: “The referee issued a red card to Vítor Pereira for irresponsible behaviour in the technical area.”Why was Vitor Pereira sent off?It’s since emerged that Pereira had kicked the ball away from his technical area and into the officials’ dugout.The ball is understood to have hit the match manager, prompting Gillett to send Pereira to the stands.Following the match, Pereira’s assistant Luis Miguel apologised on his behalf as he provided details of the incident.He told Sky Sports: “First of all I want to speak about what happened with Vitor.“I want to apologise because what Vitor did was a frustration thing with what was happening with our team, not the other team or referee.“The ball was there, he kicked the ball, sometimes you kick a bottle of water or something. We lost our minds.“I’m sorry, and Vitor will apologise in his next press conference.”Pereira is now set to face a touchline ban for Wolves’ next match away to Sunderland on October 18.GettyThe Wolves boss was shown a red card after booting a ball into the officials’ dugout[/caption]His side will go into that clash following the international break still chasing their first Premier League win of the season.Their draw against the Seagulls leaves Wolves on just two points from seven matches so far this term.However, they are only three points from safety ahead of facing the Black Cats in a fortnight.Assessing the result, Miguel added: “About the game – it’s frustrating, last week against Spurs was the same.“Last six minutes conceding a goal, but we keep on. In the end we will see if it is one point gained or two lost.“Brighton have a very good team, good position in the Premier League, so we know it’s difficult to play against them.GettyWolves remain winless in the Premier League this season[/caption]“We had to defend, but had an opportunity to score a second and finish the game but we didn’t do it.“What I promise to our supporters that we will continue to work very hard, the players gave everything to try and win the game.“Confidence will come with winning, we know we need three points as soon as possible.”Despite their winless start to the campaign, Pereira was handed a new deal by the club last month.His three-year contract extension will keep the Portuguese at Wolves until the summer of 2028.