Authorities are renewing their plea for information about an 11-year-old boy who went missing in B.C.’s Lower Mainland, potentially with a caretaker who has yet to be identified.

The RCMP has said Kai Pavlovic’s mysterious disappearance does not yet meet the criteria for issuing an Amber Alert, but that anyone with information on his whereabouts should contact law enforcement immediately.

Burnaby RCMP officers discovered him missing on Sept. 26 after being asked to conduct a wellness check on the boy.

In a news release Thursday, the detachment said investigators have since spoken with his family and extended family, and have “reason to believe Kai is staying with a caretaker who police are actively working to identify.”

“We believe there are people who know who this caretaker is, and where they are located, and we are appealing to them to come forward and speak to police,” said Cpl. Laura Hirst, in a statement.

“Our number one priority is to find Kai and confirm his safety and well-being.”

The RCMP also shared several new images of the missing boy, along with a statement from the family describing him as “bright, curious and outgoing,” and someone who “loves to climb trees, build forts and learn to sail.”

“He is a friend to all animals and particularly adores horses, cats and dogs,” it continues. “Kai’s family in New Zealand loves him dearly.”

Authorities said they have been working non-stop to locate the boy, and asked the public to keep their eyes out for him.

He is described as being approximately 5’ tall with a thin build and brown hair.

Sightings of Kai Pavlovic or information on his whereabouts can be reported to Burnaby RCMP at 604-646-9999, or any local police department.