Mohun Bagan have filed an official complaint to the AIFF after Trinidad & Tobago striker Cornell Glen alleged Saturday, after their Kolkata derby encounter, that East Bengal defender Arnab Mondal had racially abused him during the match.

The defending I-League champions lost the game 2-1 as East Bengal's South Korean attacking midfielder Do Dong Hyun scored a brace during a thrilling match in Siliguri.

The match was marred by controversies, as tempers flared all around the pitch with yellow cards being flashed quite frequently. In one such incident, Mohun Bagan assistant coach Shankarlal Chakraborty was sent to the stands by the referee, after a heated argument in the first half itself.

However, following the match, Glen accused Mondal of making racist remarks.

The former Shillong Lajong striker wants the AIFF to hold the Indian defender guilty for his "racist and distasteful comment". Mohun Bagan and Glen also wrote two letters to the Indian football governing body on the issue.

"We haven't yet received any formal reply from the AIFF, but we are expecting a response from them within today (Monday) or maximum tomorrow," a Mohun Bagan official told International Business Times, India. "We are also very sure that strict action will be taken against the player as his offence was also included in the referee's report after the match."

The defending I-League champions also hope that the AIFF will act according to the rules on such matters, provided the accusation is proved.

"During the Kolkata derby of the Hero I-League played at the Kanchenjunga Stadium, Siliguri on Saturday, East Bengal defender Arnab Mondal made a racist remark to Cornell Glen, with referee Santosh Kumar standing very close to the incident and thus heard the distasteful comment made by the East Bengal central defender," Mohun Bagan released a statement.

"In the above context, both Mohun Bagan and Cornell Glen have sent a letter to Mr. Kushal Das, General Secretary, All Indian Football Federation notifying him of the entire situation and have urged them to take stern action against the accused player as per the appropriate law set by AIFF."

Only last October during an Indian Super League game, India's Baljit Sahni accused FC Goa defender Gregory Arnolin of racially abusing him during a match.