At An Thoi International Port, numerous speedboats and tourist boats remained moored as operators halted services pending the outcome of the official investigation.
Rooty Trip Phu Quoc suspended all island speedboat tours until further notice, expressing condolences to the victims' families. Customers can reschedule or cancel bookings under the company's existing policy.
At a meeting on Saturday, An Giang authorities said rescue operations, medical treatment and support for victims had been carried out under Vietnam's "four-on-the-spot" emergency response principle.
Representatives from the Ministry of Foreign Affairs and the Ministry of Construction commended local authorities and rescue teams for their response and urged them to continue handling the aftermath of the accident.
An Giang authorities said they would prioritise support for victims and their families, investigate the cause of the accident and strictly deal with any violations.
Police are investigating the cause of the accident and coordinating with relevant agencies to return the victims' bodies to their families, continue treating the injured and assist with procedures involving the Indian victims.
The accident occurred at about 1 pm on Saturday when an Ocean Pearl Island speedboat carrying 32 Indian tourists, three crew members and a Vietnamese tour guide capsized en route from May Rut Island to An Thoi International Port.
Investigators have opened a criminal case and detained the speedboat's captain, Nguyen Hong Hai, for alleged violations of navigation safety regulations linked to the accident.