Indian Junior Players League T20 was held in Dubai last month from September 19-29.
BCCI also confirmed that big names like Gautam Gambhir, who promoted the unrecognised IJPL T20, have withdrawn support from the tournament.
"It has come to our attention that certain T20 cricket matches, series, tournaments and/or camps are being conducted by leagues under the names of Indian Junior Players League ("IJPL") and Junior India Player League/Junior Indian League ("JIPL")," BCCI said in a statement.
"Please note that any player registered with the BCCI knowingly participating, representing or associating himself/herself with IJPL and JIPL in any manner is doing so without the consent of BCCI would be doing so in violation of the BCCI Rules and Regulations," the board warned.
"Do note that the players who had been associated with any one of the Leagues in the past i.e. Gautam Gambhir, Paras Dogra and Rishi Dhawan have stated in writing that they have withdrawn all support and are no longer associated with the said unapproved Leagues," the statement added.
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