DENVER (AP) -- A lab that tests medical marijuana says it was raided by federal drug agents and ordered to turn over patient and customer records.

Full Spectrum Laboratories president Bob Winnicki said Drug Enforcement Administration agents showed up at his facility in Denver on Wednesday. The lab provided The Associated Press with a copy of a DEA subpoena requesting that it turn over customer and patient records over a six month period through Wednesday.

DEA special agent Mike Turner said the administration never comments on ongoing investigations and he couldn't confirm or deny whether there was a raid.

He said agents don't investigate medical marijuana operations but he said they could be probed if their name surfaced during investigations into large drug trafficking operations.

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