Bay of Plenty Police are appealing for information about an 11-year-old boy who has been missing since Friday, March 13.

Bay officers are making the public appeal on behalf of their South Island colleagues who have concerns for the safety of the young boy.

Police are trying to locate 11-year-old Mike Zhao-Beckenridge.

Mike Zhao-Beckenridge was last seen in Invercargill last Friday.

'Mike is believed to be in the company of his estranged step father, John Beckenridge, 64,” say police.

'They could be anywhere in New Zealand and are thought to be travelling in a dark blue Volkswagen Touareg, registration number DUY263.”

Mike is about 1.65m tall, of solid build and of Asian descent.

John is 1.75m tall, of medium build and of Swedish descent.

'There are concerns for Mike's safety and so Invercargill Police are keen to locate the pair as soon as possible,” they add.

'If anyone sees them they should contact police on 111 immediately.”

Anyone with information that might assist in locating the pair could contact the Southern District Command Centre on: 03 471 5002.

Information can also be provided anonymously to the Crimestoppers line on: 0800 555 111.

Mike Zhao-Beckenridge is believed to be with his estranged step-father John Beckenridge, who is reported to be driving a dark blue Volkswagen Touareg, registration number DUY263.