Parents of a ten-year-old boy in New Zealand, who died of brain cancer earlier this year, believe that exposure to WiFi may have killed their son.

Parents of Ethan Wyman, who died 11 months after being diagnosed with two brain tumours, want WiFi removed from classrooms at Te Horo School in Kapiti Coast.

The school has sent a survey to parents asking if the wireless service should be removed after the Wymans expressed fears that the radiation effect of wi-fi could be linked to cancer.

Damon Wyman, who still has two children at the school, said Ethan was diagnosed with the tumours three months after he was given a WiFi-connected iPod.

His parents later discovered he had been falling asleep with it under his pillow, 'The Dominion Post' reported.

Even though the device was on standby, it was still emitting bursts of radiation as it tried to connect to the router, Damon said.

According to Damon, doctors who examined Ethan said the tumours appeared to be about four months old.

"We're not saying that caused it, but it seems like a bit of a coincidence. Most people would be very cautious about giving their 5-year-old a cellphone - well, this is 30 kids in a classroom (being exposed) to the same thing," Damon said.

The report said, New Zealand's Ministry of Education, which has been at community meetings held by the school alongside the Ministry of Health, said research shows WiFi is safe.