A rescue vessel is en route to near where a flare went off in Stanmore Bay, north of Auckland.
A Coastguard Tautiaki Moana spokesperson told Newshub that Coastguard Hibiscus volunteers were on the water investigating the flare sighting alongside police.
Police received several reports of the flare sighted near Stanmore Bay shortly after 7:30pm on Sunday.
"Police and the Coastguard are working to determine circumstances," a police spokesperson said.
Several people on social media reported seeing the flare and contacting authorities.
"A flare over the water hopefully someone is okay in a boat," one person wrote.
"I hope whoever it is, comes home safe," another said.
