Two Alabama men were arrested after they were found outside a prison late Wednesday night with a T-shirt cannon and a bag with two suspicious packages.

Alvin Andrews and Ladarius McDade were spotted driving suspiciously near the Limestone Correctional Facility, Alabama Department of Corrections officials said Thursday.

As police approached the car, the car sped away and led police on a chase for a short period of time.

Investigators said as they traced the path the chase they found a blue duffel bag and T-shirt cannon. The bag contained “two cylinder-shaped packages wrapped with black tape, a night-vision monocular and an extra CO2 cartridge,” corrections officials said.

The pair were charged with trespassing on prison grounds, promoting prison contraband and attempting to elude police. Corrections officials said more charges may be pending.