The EU has launched a series of unannounced visits to Intel offices, in pursuance of its anti-trust case against the semiconductor giant.

Computer makers and retailers also received visits.

The EU alleges that Intel has been abusing a rebate program, with the intention of stopping PC makers buying chips from competitors.

European Commission spokesman did not disclose to the New York Times which retailers or PC makers were also involved.

"Officials are conducting inspections of several premises of Intel, as well as the premises of PC manufacturers and retailers in Europe," said Mr. Todd, without giving details.

The investigation has been ongoing since 2000. However in 2004, the investigation was set aside for lack of evidence.

However the storm clouds are gathering again.

In Japan, the Fair Trade Commission found Intel guilty of giving rebates to Japanese PC makers including Sony and Toshiba.

Advanced Micro Devices, has launched a $55m lawsuit, in Japan, with a similar action in the US.

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