Neymar was sent off and then tried to confront a player after the game as defending champions Paris Saint-Germain lost 1-0 at home to Lille, falling three points behind the new French league leaders in a tense title race.
Neymar was shown a second yellow card in the 90th minute for kicking right back Tiago Djalo off the ball, having been booked in the first half for shoving midfielder Benjamin Andre in the face. Djalo was also sent off and remonstrated angrily with the referee.
As both players argued as they walked back to the locker rooms, footage from broadcaster Canal Plus captured Neymar pushing Djalo on the shoulder and then trying to get past security officials to confront him.
An angry Djalo also reacted, trying to reach Neymar, causing one security official to fall over, while another intervened swiftly to block the Brazilian and lead him away.
Canada forward Jonathan David scored Lille's goal in the 20th minute with a deflected strike, as PSG slipped to a fifth home defeat and eighth overall, with a tough trip to Bayern Munich on Wednesday in the Champions League.
“Each time we lose we say the same thing, that we lacked commitment. We shouldn’t find any excuses," PSG captain Marquinhos said. “We need to be stronger than that at home. A lot of teams have come here and won, which we’re not used to. We’re at an important point of the season and must improve."
PSG have been poor against the other sides in the top four, twice losing to Monaco, losing once to Lyon and drawing their other game against Lille.
“We need more consistency because there have been too many ups-and-downs,” Marquinhos said. "Our next match is one of the biggest.”
Frustration got to Neymar, who now faces another suspension after getting red-carded against Marseille at the start of the campaign. Shortly after shoving Andre in the face, he fell to the ground in a failed bid to win a penalty.
Starting his first game for two months after recovering from a torn adductor muscle, Neymar was wasteful, volleying a cross wide from a good position and squandering two free kicks.
After Lille goalkeeper Mike Maignan got a hand to Kylian Mbappe's low shot in the 15th minute, Lille caught PSG cold five minutes later on a classic counterattack.
Jonathan Ikone found space down the right and pulled the ball back to David, whose shot from just inside the penalty area looped over goalkeeper Keylor Navas.