BOCA RATON, Florida (Bloomberg) -- ADT Ltd. said about 7.3 million, or 75 percent, of Alert Centre Inc.'s shares outstanding have been tendered under its $93 million acquisition offer for the company.

Bermuda-based ADT last month agreed to buy Alert Centre for $9.25 a share to expand its electronic security services business into the southeastern US.

Under the companies' November 7 agreement, Alert plans to convene a meeting of shareholders to vote on the acquisition.

Upon completion of the merger, all shares of Alert other than the shares purchased by ADT Acquisition Corp., will be converted into the right to receive $9.25 a share in cash.

ADT said that ADT Acquisition Corp. has enough voting power to approve the agreement without the vote of any other Alert shareholder. All outstanding warrants of Alert will expire upon completion of the merger.

Cable & Wireless names acting chief LONDON (AP) -- British telecommunications group Cable & Wireless Plc announced yesterday it has chosen its top finance executive as its acting chief executive.

In a brief statement Cable & Wireless said Rod Olsen's new role is subject to shareholders' approval at an extraordinary general meeting to be held mid-January.

In late November, Cable & Wireless Executive Chairman Lord Young and Chief Executive James Ross both left the company.

The two men had been involved in a power struggle at the company and the board decided to send both men packing and named Brian Smith, chairman of BAA PLC, the British airports' operator, as non-executive chairman.