The question requires identifying a former AIFF official who also had a notable presence in Nagaland sports associations and passed away in 2025.
The question tests knowledge of specific sports personalities and their timelines.
Atuo Mezhür fits the description provided in the question, being a former AIFF official with significant roles in Nagaland's sports sector who passed away in 2025.
Therefore, Atuo Mezhür is the correct answer based on the question's parameters.
Which veteran Indian actor-director, known as 'Bharat Kumar' for his patriotic films, passed away on 4 April 2025?
Which well-known Gujarati poet passed away at the age of 84 in February 2025?