Francisco Moura's second-half strike earned hosts Porto a 1-1 draw against 10-man AS Roma in the first leg of their Europa League knockout round play-off on Thursday.
A video of the incident showed that Taison stuck his finger up at a section occupied by Dynamo fans and then hoofed the ball into the stands.
'We tried to keep him, but there is nothing we can do'
Sevilla in semis as Wolves miss penalty.
Australia got off to a terrible start when centre back Bailey Wright gave away possession with the second pass of the game, allowing Diego Souza to hammer home a low shot to groans from most of the 49,000 fans at the Melbourne Cricket Ground.
Aizawl slowly grew in confidence and started dominating the midfield battle.
Wednesday night saw a few surprise results while a debutant club makes a mark
Olympiakos Piraeus battled back from a two-goal deficit to earn a 2-2 home draw with last year's runners-up Tottenham Hotspur in their Champions League Group B opener.
Liverpool handed their fiercest rivals a painful lesson on Thursday with a dominant 2-0 win over Manchester United in the first leg of a Europa League last-16 clash.
Manchester United goalkeeper David de Gea added another heart-stopping save to his collection as his team held a highly-impressive Sevilla side to a 0-0 draw away from home in the first leg of their Champions League last-16 tie on Wednesday.
images from the UEFA Champions League matches played across Europe on Wednesday
Photos from the Champions League matches played across Europe on Tuesday