It also comes after Chris Farnell, the lawyer working for Cellino, was escorted from Elland Road on Monday by managing director David Haigh, director Salem Patel and security staff.
Nooruddin has also issued an email to Leeds United staff in an attempt to bring some clarity to the situation and informing them not to take instructions from anyone other than GFH.
Brian McDermott on the weekend's events
"I got a phone call Friday night from the football club, Chris Farnell (a lawyer representing Cellino), to say I'd been relieved of my duties and a letter was on its way. Saturday morning I got another phone call from GFH to say that wasn't the case. A couple of statements came out and I've been speaking to the LMA, so we've now got to this stage where I'm sitting here again."
"You will all, of course, be aware of the speculation surrounding the ownership of Leeds United FC and I wanted to let you know that GFH Capital currently retains its ownership of the club," wrote Nooruddin.
"The existing board remains in control of the club and David [Haigh] is the managing director.
"No instructions or directions whatsoever should be taken from anyone outside the existing management structure and the board.
"Please do not hesitate to contact me or any senior member of staff should any issues arise.
"With thanks as always for your support. We all look forward to ending the current round of speculation and to marching on together as Leeds United FC."
BBC Radio Leeds understands GFH will meet the joint consortium in London on Tuesday.
Adam Pope, the station's Leeds United commentator, added that GFH insists the club will not go into administration while it is in charge.
A proposed takeover by Sports Capital, which involves Haigh and Andrew Flowers, the managing director of club sponsor Enterprise Insurance,
fell through last week
because of a lack of financial backing.
McDermott committed to Leeds job
They have now joined forces with the Together Leeds consortium, led by local businessman Mike Farnan and which also includes Welcome to Yorkshire chief executive Gary Verity and former Hull City chairman Adam Pearson.
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