PGMOL says it is “appalled” at the level of vitriol directed at referee Michael Oliver on social media following Myles Lewis-Skelly's red card during Arsenal's win at Wolves.
Arsenal are expected to lament amid widespread criticism of Oliver's decision, despite the body responsible for officiating the game at England's professional association on Sunday.
Lewis-Skelly sent for a foul on Matty Doherty near the edge of the Wolves box.
Darren England called the decision “reviewed and upheld”, with the cheat deemed Lewis-Skelly to have committed “serious foul play”.
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Jamie O'Hara and Jay Brusroyd weigh in on the controversy surrounding Lewis-Skelly's controversial red card against Wolves
Following online abuse of Oliver, PGMOL statement Read: “We are concerned by the threats and abuse directed at Michael Oliver following Arsenal's Wolverhampton Wanderers V Arsenal fixture.
“No official should be subject to any form of abuse, let alone the hateful attacks directed at Michael and his family over the past 24 hours.
“The police are aware and a number of inquiries have begun. We support Michael and all those affected and are determined to deal with this unacceptable behaviour.
“Unfortunately, this is not the first time a match official has been forced to deal with threats in recent times. We will continue to support all investigations.”
Redknapp: Referees can make mistakes
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Super Sunday panel Jamie Redknapp, Jamie Carragher and Lee Hendrie discuss the abuse directed at referee Michael Oliver and why it must stop, after he sent off Arsenal's Myles Lewis-Skelly in the win.
Sky Sports' Jamie Redknapp:
“I spoke to a few pundits and former teammates who said it was bad. They thought it was a red card and the player could have rolled his ankle and been out for a couple of weeks. They felt he was endangering the opponent, not just stopping attack.
“He gets it on the ankle, so it's not a big challenge – let's put it bluntly. But he absolutely doesn't deserve that abuse. He could be the first to say he could have given himself some time, but referees can make mistakes like footballers. That's life .
“But if we get to the point where every mistake is corruption, then we're in a really dangerous place. Corruption is still a matter of opinion.”
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Sky Sports' Melissa Reddy and the Mirror's Darren Lewis discuss Lewis-Skelly's controversial red card
“I can't believe Michael Oliver sent Lewis-Skelly,” he said Sky Sports' Tim Sherwood on Football on Saturday.
“It's so clear and I'll leave it to you guys,” Arsenal boss Mikel Arteta said Sky Sports after the game. “I'm absolutely wonderful. But I'll leave him with you, that's obvious I don't think my words will help.”
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Free to watch: highlights from Wolves' match against Arsenal in the Premier League
PGMOL's position on the incident is challenged extremely late, the point of contact is high and the video evidence supports that conclusion.
In the second half of Arsenal's win, Wolves midfielder Joao Gomes was shown a yellow card for a high and late tackle on Jurrien Drvo.
Although Gomes was sent off, the fact that he was dropped for two bookings means he will only miss one match.
Lewis-Skelly, by contrast, is currently set to miss Arsenal's home game with Manchester City, live Sky Sports On Sunday, as well as the televised second leg of their Carabao Cup semi-final with Newcastle and the Premier League trip to Leicester on February 15.