In an effort to further reduce any radiation risk during this weekend's Japanese MotoGP, most teams appear to have imported food and drink for the event.

The Motegi circuit is located around 110km from the damaged Fukushima powerplant and riders came close to boycotting the grand prix, although independent reports stated that the radiation risk at Motegi is 'negligible'.

Despite the initial resistance, all except the injured Loris Capirossi will now be present this weekend, although at least some teams appear to have gone against advice that importing food could cause problems at customs.

"Well I think we take some food from Europe and drink. Try to limit any risk as much as possible," said Yamaha's reigning world champion Jorge Lorenzo. "The risk is small, but you never know."

Seven time MotoGP champion Valentino Rossi confirmed that Ducati has taken similar precautions. "Drink and food from home and I think [everything else] is more-or-less a normal situation," said the Italian.

"I'm just being careful with the water," commented Suzuki's Alvaro Bautista.

Hiroshi Aoyama, the only full time Japanese rider, isn't taking any special measures - but his Italian-based Gresini team is.

"My team brought some water from Italy. It was a huge amount. I don't know how much it cost!" he smiled. "From my side I've been here for a week already, spending time with my family and having normal food. So nothing special."

Keeping the ('depleted') paddock attendance on edge, an earthquake with a preliminary magnitude of 5.6 was reported off-shore from the Fukushima power plant on Friday. There have been no reports of damage.

"The quake has not caused anything abnormal at Fukushima Daiichi," Masashi Kato, a spokesman for the plant's operator Tokyo Electric Power Co., told AFP.

A 9.0 magnitude earthquake, and following tsunami, caused massive destruction to the region in March.