Sept 4 (Reuters) - Investa Office Fund (IOF) said on Tuesday that Canada-based Oxford Properties Group had offered A$3.29 billion ($2.4 billion) for acquiring the property manager, trumping an earlier offer from the Blackstone Group BX.N .
Oxford offered A$5.5 per unit in Investa, compared with the A$5.3485 offered by Blackstone, the company said in a statement.
Investa had requested a trading halt in its shares ahead of the announcement.
($1 = 1.3868 Australian dollars)
