The senior Akali leader also released some purported audio recordings in order to show that the chief minister and his nephew were partners in the illegal sand mining business.
He alleged that Salapur village Sarpanch Iqbal Singh and his son Binder were carrying out illegal sand mining business at the instance of Channi.
The audio recordings were done by one Darshan Singh who had befriended members of the sand mafia to expose them, Majithia claimed.
Channi had rejected the allegations against him and accused the BJP-led central government of hatching a "conspiracy" to "trap" him in the case in which raids were conducted by the ED at many places in the poll-bound state.
He further alleged that former chief minister Amarinder Singh and Majithia had a role in "this conspiracy".