A New York Times reporter has been asked to appear in federal court next week to answer testimony that a judge said implicated the writer in a “conspiracy” to obtain confidential documents regarding the anti-psychotic drug Zyprexa.

The reporter, Alex Berenson, wrote a number of articles starting late last year saying the drug’s manufacturer, Indianapolis-based drug maker Eli Lilly and Co., downplayed Zyprexa’s risks and marketed it for unapproved uses. Lilly has denied the charges.