According to a statement shared by the Consulate General of Vietnam in Mumbai, PM Minh Hun also directed authorities to provide assistance to victims and their families.
Of the 15 deceased, 10 are from Tamil Nadu, three from Andhra Pradesh, and two from Kerala.
While the exact details of the incident were yet to be released, some are feared drowned.
The Auckland event also celebrated 100 years of sporting ties between India and New Zealand, with Modi highlighting Chandrayaan cooperation, rugby partnerships, and the contribution of the Indian-origin community to New Zealand's public life.
US officials are reviewing intelligence shared by Israel about an alleged Iranian plot targeting Donald Trump, though some reportedly questioned its credibility. CNN said the information pointed to broader discussions among Iranian hardliners rather than a specific operational plan.
Russia's western Siberia is experiencing an unprecedented heatwave, with temperatures in several regions shattering records over the past 50 years or so, local weather authorities said on Tuesday.
President Yoon Suk Yeol boarded a visiting US nuclear-powered aircraft carrier on Tuesday ahead of joint drills between South Korea, the United States and Japan aimed at enhancing their responses against rising threats from North Korea.
Sri Lankan cabinet approved a proposal to make preparations to develop the Hingurakgoda airport in the North Central Province as a complete airport for civilian use, the government's information department said on Tuesday.
The European Union (EU) on Tuesday accused Microsoft of breaching antitrust rules with the 'abusive' bundling of its Teams and Office products.
An overnight manhunt ended Tuesday morning after police located him just before he killed himself.
