Brookfield Multiplex Ltd. has given a dubious response on the speculations over its plans of investing $4 billion on office property in 2010.

"I can't confirm or deny", said Brookfield Multiplex spokeswoman Kerry Muskens.

Refusing to comment further on the speculations, she said, "We haven't commented to the AFR (The Australian Financial Review) at all about their article and their research".

The Multiplex suffered a net loss of $340.3 million in 2009 due to the devaluation of property and other problems.

The company paid 5.25% of the quarterly distribution to the security holders in the fourth quarter of December.

It witnessed the complete development of Macquarie Group building in Sydney and the Southern Cross West development in Melbourne, last year, investing $375 million into it.

However, the company holds the burden of a debt of $1.66 billion that will mature in December 2010.

For Brookfield, the securities for SITES reached to 60%.