Arsenal have strenuously denied that Mikel Arteta insulted the family of Porto boss Sergio Conceicao during Tuesday night's Champions League clash at the Emirates Stadium.
The Gunners edged into the quarter-finals for the first time in 14 years after beating their Portuguese opponents 4-2 on penalties, but the win was overshadowed by Conceicao's post-match claim.
Having furiously confronted Arteta on the pitch in the immediate aftermath of the penalty shootout, Conceicao made the accusation in his press conference.
He told reporters: 'The result was injust. Our team deserved to go through.