The younger man’s child was reportedly playing on the step of an apartment block pool when they lost their footing and fell into deeper water, sparking the double Easter tragedy.
The child’s father, Dharmvir Singh, 38, and grandfather Gurjinder Singh, 65, leapt into the pool to try to save the toddler only to get into trouble themselves.
Mitchell Ware from the Queensland Ambulance Service said bystanders were able to pull the people from the pool and performed CPR until paramedics arrived, but both men died at the scene.
The toddler in question was saved and unhurt, according to 7News.
“I will just reiterate to the community to exercise due care, especially if you’re not a strong swimmer, and especially if there’s young children around that you are really careful,” Ware said.
“Because we know that children and even adults can drown within a couple of seconds if they find themselves in those sort of situations.”
The family is understood to be holidaying from Victoria.
It is unclear whether safety flotation devices were by the pool at the time.
Ware said “tragic” incidents such as this affected families, witnesses and first responders.
“We’ve got a good support network around our paramedics,” he added.
“But it’s not just our first responders that can respond to these sort of incidents that are obviously tragic for the family, also the community - there [were] bystanders within the pool also on holidays.
“These incidents can have long-lasting effects for not just the family members involved but also the people [who] were at the scene as well and also the first responders.
“So again, obviously express our condolences to those people.”
Queensland police are investigating and a report will be prepared for the coroner.