Correctional officers at the Mangilao Department of Corrections facility spotted suspicious activity through drone surveillance on August 10.

Officers say inmate Henry Dean San Nicolas was seen removing an item from his pocket and placing it on the ground.

The item, a bent straw containing a white crystalline substance, tested positive for methamphetamine.

Guam Police took custody of the evidence, and San Nicolas was arrested.

He is charged with illegal possession of a controlled substance and promoting major prison contraband, both felonies.