New York's attorney general has launched an anti-trust investigation into the microprocessor dealings of Intel.
Intel is already being sued by smaller rival AMD over alleged anti-trust actions in the marketplace.
New York attorney general, Andrew Cuomo, yesterday served a wide-ranging subpoena on Intel seeking documents and information on its dealings.
Cuomo says he is investigating whether Intel violated state and federal anti-trust laws by coercing PC manufacturers and retailers to exclude main rival AMD from the worldwide market for x86 computer processing units (CPUs).
"After careful preliminary review, we have determined that questions raised about Intel's potential anti-competitive conduct warrant a full and factual investigation," said Cuomo.
"Protecting fair and open competition in the microprocessor market is critical to New York, the US and the world. Businesses and consumers everywhere should have the ability to easily choose the best products at the best price, and only fair competition can guarantee it.
"Monopolistic practices are a serious concern particularly for New Yorkers who are navigating an information-intensive economy," he said.
Similar investigations into Intel have already been launched by the European Commission and the Korean Fair Trade Commission.
In 2005, the Japanese Fair Trade Commission concluded that Intel violated its competition laws and Intel agreed to cease and desist.