India charges 33 aboard armed U.S. 'anti-piracy' ship

(Reuters) - India has charged 33 men aboard an armed ship operated by a U.S. maritime security firm for failing to produce papers authorizing it to carry weapons in Indian waters, police said on Saturday, a move that could trigger diplomatic tensions.

The captain and the chief engineer were not among those arrested in Friday's action.

The crew have been charged with illegal procurement of diesel and possession of arms and ammunitions without required documentation.

"The captain kept saying that he would produce the required documentation, but whatever was produced was inadequate," a police officer, who did not wish to be identified, told Reuters from the southern city of Chennai.

Police are still checking the authenticity of the documents on the ship, Chacko Thomas, a spokesman in India for Virginia-based AdvanFort, which owns the Sierra Leone-flagged ship Seaman Guard Ohio, told Reuters.