A statement from the administrators, John Park and Ginette Muller of FTI Consulting, said they would co-operate with LM's senior management to "produce a comprehensive strategy to meet all obligations to its investors and creditors".
A spokesperson from FTI this morning could not comment on a timetable for the voluntary administration nor if payments would be delayed.
LM was founded in 1993 by expat New Zealander Peter Drake and claims to have assets worth more than A$3 billion under management.
The company was forced to go on the PR offensive last year after another Australian fund management firm, Trilogy Capital Group, attempted to take over two of its funds.
While Trilogy criticised LM's management of the First Mortgage Income Fund and said it lacked a clear strategy, the latter responded by calling Trilogy a "corporate fund raider" and accused it of spreading misinformation.
Trilogy successfully replaced LM as the responsible entity for one of the funds it had eyed up following a meeting held in Sydney in early November.
Correction: An earlier version of this story said no repayments of capital had been made to investors since the fund was put on ice in 2009.