A US military surveillance blimp operated by contractors near Laredo, Texas, broke free from its tether on Monday evening and later crashed in Mexico.

The blimp did not carry a crew when in the air, and no ground personnel were injured in the incident.

The 66-foot surveillance blimp’s tether cable, which secures the balloon to the ground, became tangled with other cables amid storms on Monday, a spokesperson for Joint Task Force-Southern Border, confirmed in a statement to CNN.

Click here to read more: US military surveillance blimp supporting CBP is lost at the southern border, wreckage found in Mexico