Updated

Police in a southern Indian port city have arrested the crew of a U.S.-owned ship on charges of illegally transporting weapons and ammunition in Indian waters.

A police official says eight crew and 25 security guards aboard the MV Seaman Guard Ohio were being questioned Friday after failing to produce documents allowing them to carry the weapons. The official spoke on condition of anonymity because he was not authorized to speak to the media.

The coast guard said the ship is owned by Virginia-based security company AdvanFort but is registered in Sierra Leone. It was detained Oct. 12 and has been in the Tuticorin port in Tamil Nadu state.

The ship's captain told investigators the company provides armed escorts to merchant vessels traveling in pirate-infested waters in the Indian Ocean.