India, June 11 -- India on Wednesday condemned a US attack on a tanker that left three Indian crew members missing in waters off the coast of Oman and summoned the most senior American diplomat in New Delhi to register a strong protest over the incident, which came two days after another US strike on a tanker with an all-Indian crew.

A statement from the external affairs ministry that condemned Wednesday's attack didn't mention who was behind the strike, though people familiar with the matter confirmed the Palau-flagged tanker Settebello was targeted by US forces for reportedly trying to evade an American blockade of Iranian ports.

US charge d'affaires Jason Meeks was summoned to the external affairs ministry by additional secretary (Am...