The Disciplinary Committee rejected the Football Federation of Chile (ANFP) claim that Castillo was ineligible, which would ordinarily result in all the qualifiers he played in being awarded as 3-0 victories to Ecuador's opponents and therefore moving Chile up to a qualification place.

However, the ANFP has taken the case to the FIFA Appeals Committee as it seeks to qualify for the World Cup in Qatar.

Following a 10-day extension, the Ecuadorian Football Federation has until tomorrow to respond, per the ANFP, which expects to hear a decision within 15 days.

The Chileans claim Castillo, who made eight appearances in Ecuador's qualification campaign, was actually born in Colombia, is three years older than Ecuadorian officials say and was ineligible to play for Ecuador.

"We are completely sure about the conclusions of our investigations," ANFP general secretary Jorge Yunge said.

"It is absolutely clear that the player uses an adulterated Ecuadorian document. 

"What is at stake here is not just a place in the 2022 World Cup, but the entire principle of fair play."

Castillo had previously faced doubt over his permission to play for Ecuador, with suggestions he is in fact Colombian preventing the player from making a full international debut until September 2 last year.

Castillo had played for Ecuadorian national youth teams, but a senior international bow was put on ice until the end of an investigation into his origin.

An Ecuadorian court in April 2021 ruled Castillo was Ecuadorian, and born on November 10 1998 in Ecuador.

However, the ANFP claims to have proof Castillo was born in Tumaco in Colombia on July 25 1995, not in General Villamil Playas three years later as the Ecuadorians say. 

The ANFP also claims to have a signed declaration from Castillo saying his first club in Ecuador registered the player using falsified documents.

Chile drew 0-0 away with La Tri and lost 2-0 at home - both games in which Castillo played - so could jump from seventh to fourth in the South American Football Confederation (CONMEBOL) World Cup qualification standings if Castillo was deemed ineligible.

The top four in CONMEBOL qualifying advance to the World Cup, while fifth place heads to an inter-continental playoff.

Peru finished fifth and would stay there were the table changed as the ANFP wants.

Peru lost to Australia in that playoff.

Ecuador have been drawn alongside hosts Qatar, The Netherlands and African champions Senegal in the group stage of this year's men's World Cup.