Arsenal captain Cesc Fabregas has been charged with improper conduct by the Football Association following allegations he spat at Hull assistant boss Brian Horton after the FA Cup tie at the Emirates Stadium on March 17.
The Gunners were asked by the Football Association to provide their observations, and according to manager Arsene Wenger, they have now decided to take the matter further.
Fabregas, who was not playing against Hull because of a knee injury, issued a statement on the evening of the incident to deny he spat at Horton in the tunnel.
Wenger feels there is no case to answer.
"Fabregas has been charged for improper conduct on the night," the Arsenal manager said, speaking at today's press conference ahead of the Barclays Premier League game against Middlesbrough on Sunday.
"I always said we are always very open to co-operate with any investigation.
"I personally looked at the reports, at the video evidence and there is nothing in there against Cesc."