SMYRNA, Del. (CBS/AP) — Prison officials in Delaware are taking more steps to ensure that inmates don’t get illegal air mail deliveries. Gov. John Carney is expected to sign a bill Thursday into law making it a Class F felony to deliver, or attempt to deliver, contraband by drone into Delaware prison facilities.

Carney plans to sign the bill while visiting the state’s maximum-security prison in Smyrna.

Officials note that unmanned aircraft systems are capable of delivering contraband into detention facilities without undergoing inspections.

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