MANCHESTER UNITED claimed “justice” was served as Kai Havertz’s shootout miss sent Arsenal spinning out of the FA Cup.

United’s Harry Maguire appeared to call Havertz a “cheat” during a mass brawl after Arsenal were awarded a penalty for the defender’s challenge.

Martin Odegaard’s kick was saved and ten-man United — who had Diogo Dalot sent off — took the third-round clash to extra-time and penalties.

After Havertz’s shootout attempt was foiled by United keeper Altay Bayindir, the Red Devils posted on X: “Justice”.

Havertz missed several big chances before his tame penalty.

His wife Sophia posted messages on Instagram showing screenshots of vile abuse and threats towards their unborn child.

She pleaded: “Please guys be more respectful. We are better than this.”

Bruno Fernandes scored a superb 52nd-minute opener for United.

But 100 second after Dalot saw red for a second booking, Gabriel levelled on 63 minutes.

The ref Andy Madley — without the help of VAR — controversially gave a penalty against Maguire for a foul on Havertz.

During the melee, Havertz went down holding his face after Manuel Ugarte appeared to be pushing him away with his forehead — before Alejandro Garnacho shoved the German in the chest.

Ugarte posted a snap of himself and Maguire, adding: “When we have the ball, it’s a game and when we don’t, it’s a fight.”

United boss Ruben Amorim, whose team will host Leicester in the fourth round, would not be drawn on his players’ bust-ups with Havertz.

He said: “The players told me it was not a penalty, but let’s move on.

“We are more resilient. More aggressive.

“We showed a different spirit. We are improving that aspect.

“The players were really tired but today was our day. I felt a connection with the fans.”

United skipper Fernandes added: “With one player less, we suffered and sacrificed a lot and at the end you get this.

“We want to celebrate but this is when we have to back it up.f”

Turkish keeper Bayindir was the United hero — saving from Odegaard in the match and Havertz in the shootout.

The Gunners’ woes were compounded by striker Gabriel Jesus’ tearful exit on a stretcher after 38 minutes.

Arteta said: “It’s not looking good. He was in quite a lot of pain.

“I love our team and I love how good they are and what they do because in 1,000 games, you should lose one and probably it was this one.

“It’s unbelievable."