Anea said he has opted to leave the post as he is not in healthy state.
There has also been reports that he has left the post given there have been speculations over his citizenship.
A section of domestic boxing enthusiasts had earlier claimed Anea is not a Tanzania citizen and thus he does not merit occupying the TPBRC president's post.
The TPBRC acting president, Aga Peter, has nevertheless stated the said stakeholders' statements a mere rumours and are targeting to tarnish Joe's image.
''All I know is Anea wrote the first letter seeking resignation becaue of health issues, his second letter has stated the same thing, that is what I know,'' Peter disclosed.
"Should there be citizenshp claims, the relevant authority will perform its duty and the truth will eventually come out.''
Yassin Abdallah 'Ustadhi', a prominent domestic boxing stakeholder, pointed out he is surprised the then Tanzania Professional Boxing Commission (TPBC) officials are saying Anea is not a Tanzania citizen, whereas they had worked with him in the TPBC.
"These are mere gossips, people who say Anea is not a Tanzania citizen had first of all handed him the TPBC treasurer post,'' Abdallah stated.
''He thereafter went on to hold the president post at TPBC and TPBRC, a post he has left because of personal reasons, entertaining gossips in boxing administration is totally unacceptable.''
Former TPBC official, Chaurembo Palasa, noted much as Anea is said to have resigned because of controversy over his citizenship, he also exited the post for what the former termed as failure by Anea to issue statement on TPBRC income and expenditure.