Australia's fourth largest telecommunications operator Vocus Communications has lost another suitor, with AGL Energy announcing on Monday that it had withdrawn its non-binding, indicative proposal to acquire the firm.

Vocus Communications has received another takeover offer, this time from AGL Energy, which has made a bid to buy all the shares in the company for $4.85 a share, meaning that the total bid would come to a shade over $3 billion.

Swedish private equity firm EQT Infrastructure has ended talks with Vocus Communications over a possible takeover which valued the company at A$3.3 billion, the Australian firm says.