In Australia, a 7-month-old infant was discovered “unresponsive” after being pulled from a lake at a park by his mother around 10:40 a.m. on Saturday, leading to a police inquiry.

On Tuesday, homicide detectives arrested and charged a 42-year-old man with manslaughter after launching a probe over the baby’s “unexplained” death.

The man, whose name has not been released, was “known to the child,” police told The Post.

According to a statement from the Queensland Police, emergency teams were called to a park in Chatsworth, Queensland, due to reports of an “unresponsive” baby. It was soon revealed that the infant had drowned.

“The child was transported to hospital for treatment; however was declared deceased that night,” police said.

The Australian Broadcasting Corporation (ABC) notes that homicide detectives are involved in the investigation.

“There are missing elements prior to the incident that we need to piece together,” stated Detective Inspector Craig Mansfield of the Wide Bay-Burnett police, according to the outlet.

“We’ve got some support from the child trauma unit and homicide investigation group working with the local detectives.”

Mansfield added that the baby was with both of his parents for a camping trip at the park, before heading home to North Queensland when “the incident happened the following morning.”

After the baby’s mother pulled him out of the water, “multiple people assisted with CPR,” 9News reports. 

“We’ve had a lot of campers staying there overnight, and we’ve also had a lot of people popping in to use the facilities and the park,” Mansfield said. “We’re aware that some people have left at the time of the drowning of this infant child.” 

He added that other vehicles that were parked in the nearby area are being tracked down and contacted for information, though they are not considered persons of interest.

The child trauma unit and the homicide investigation squad are supporting detectives with their investigation. The incident is not being treated as “suspicious.”

The Post has reached out to Wide Bay-Burnett Police for comment.