Investor Relations

WILMINGTON, Mass., Oct 1, 2002 (BUSINESS WIRE) -- Charles River Laboratories International, Inc. (NYSE:CRL) has scheduled a conference call to discuss third-quarter 2002 financial results on October 30, 2002 at 8:30 a.m. Eastern Standard Time. Charles River will release third-quarter 2002 results after the market closes on Tuesday, October 29, 2002.

Investors will have the opportunity to listen to a webcast of the conference call through the company's website at http://www.criver.com. To listen to the live webcast, please go to the website at any time before the call but at least fifteen minutes prior, to register, download, and install any necessary audio software. For those who cannot listen to the live webcast, a replay will be available on the website two hours after the call and will remain available until Wednesday, November 6, 2002.

Charles River Laboratories, based in Wilmington, Massachusetts, is a leading provider of critical research tools and integrated support services that enable innovative and efficient drug discovery and development. The Company is the global leader in providing the animal research models required in research and development for new drugs, devices and therapies. The Company also offers a broad portfolio of biomedical products and services that enable customers to reduce costs, increase speed and enhance productivity and effectiveness in drug discovery and development. Charles River's customer base spans over 50 countries, and includes all of the major pharmaceutical and biotechnology companies, as well as many leading hospitals and academic institutions. The Company operates 77 facilities in 16 countries worldwide.

CONTACT:
Charles River Laboratories
Susan E. Hardy, 978/658-6000 Ext. 1616