Iran on Tuesday criticized the actions of a US navy ship that shot at an approaching fishing boat off the United Arab Emirates, saying the incident showed foreign forces threatened regional security.

One Indian national was killed and three others injured on Monday when the US refueling ship, the USNS Rappahannock, opened fire on a small motor boat which US officials said ignored repeated warnings to halt its approach.

The United States has been building up its presence in the Gulf as Washington seeks to ramp up pressure on Iran over its nuclear program which it suspects is aimed at producing nuclear bombs. Teheran denies the accusation.