New York Attorney General Eliot Spitzer filed a lawsuit on Thursday charging many of the world's largest makers of computer memory chips with price fixing.

The Associated Press reported that the suit alleges the companies had secret arrangements from 1998 to 2002 to raise prices of DRAM memory chips commonly used in computers and electronic devices.

The companies named include Micron Technology ( MU) Korean-based Samsung Electronics and Infineon ( IFX).

A Justice Department investigation that began in June 2002 has so far resulted in more than $700 million in fines and charges against 12 individuals and four companies -- Samsung, Elpida Memory, Infineon and Hynix Semiconductor.

Micron admitted wrongdoing, but was granted immunity from federal criminal charges in exchange for its cooperation in the probe, Spitzer's office said.