A lawyer for a former New Mexico deputy accused of killing a fellow deputy wants to test of a "white powdery substance" found in the dead deputy's wallet.
John Day, an attorney for Tai Chan, said in a motion last week that he uncovered the substance listed as "drug" during a review of Las Cruces police evidence.
The substance has not been tested.
Authorities say former Santa Fe County sheriff's Deputy Chan fatally shot Jeremy Martin at a Las Cruces hotel in October after they drank at a nightspot and got into a heated argument.
Police say the two deputies were staying at the hotel after dropping off a prisoner in Arizona.
An autopsy report found alcohol in Martin's system but no drugs.
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