German engineering conglomerate Siemens AG said on Friday that investigations by US regulators into a corruption case against it will end soon - the company plans to plead guilty and pay at least $450 million in fines to settle the long-standing corruption charges. Siemens and its subsidiaries in Bangladesh, Venezuela and Argentina have agreed to plead guilty on Monday in US District Court in Washington, in front of Judge Richard J. Leon.

According to an industry source, Siemens was expected to pay a total of $800 million in the case, including around $450 million to the US Department of Justice, and $350 million to the Securities and Exchange Commission (SEC). Its three subsidiaries will pay at least $500,000 each.

Siemens has been accused by the Justice Department of making bribes and trying to falsify its corporate books from 2001 to 2007. The department has also accused some Siemens’ subsidiaries of bribery, including paying kickbacks to the former Iraqi government to get some of the United Nations Oil-for Food contracts.

The company spokeswoman, Elizabeth Cho, said late Friday: “We are in the final stages of resolving the corruption investigations in the United States. The investigations by the SEC and the Justice ministry should conclude shortly.”

The prosecutors said in court papers that the Justice Department and Siemens agree that the appropriate resolution of the matter consists of guilty pleas pursuant to plea agreements.

Meanwhile, German prosecutors are also probing the affair, which cost the jobs of former Chief Executive Klaus Kleinfeld, and ex-CEO and former supervisory board Chairman Heinrich von Pierer. Both resigned from their posts last year, and have not been accused of crimes.