Nigeria has seized over 100 bags of plastic rice smuggled into the country, where prices of the staple food are rocketing ahead of the Christmas and New Year holidays.

A suspect has been arrested over the haul of 102 bags of the fake rice, which officials warned Wednesday was dangerous for human consumption.

They are suspected to have been smuggled or illegally shipped in from China through Lagos port, a senior customs official in Nigeria's commercial hub told AFP.

The bags, branded "Best Tomato Rice," had no date of manufacture and were intercepted Monday in the Ikeja area of the sprawling city, the official said on condition of anonymity.

"We have done a preliminary analysis of the plastic rice. After boiling, it was sticky and only God knows what would have happened if people consumed it," Ikeja area customs controller Mohammed Haruna was quoted as saying.

Nigeria has banned rice imports as it seeks to boost local production.

Haruna said the plastic rice was to be sold ahead of Christmas and New Year festivities, with the price for the popular Nigerian staple hitting the roof because of galloping inflation. Its cost is more than double what it was in December last year.

Nigeria's inflation stood at 18.5 percent in November, its 13th consecutive monthly rise, driven by higher food prices.

The customs service has sent the fake rice to the National Agency for Food and Drug Administration and Control for further analysis.

The health minister tweeted a couple of days after the seizue that the rice was in fact found not to contain plastic — but the National Agency For Food and Drugs denied that, saying that tests are still underway.

Chinese manufacturers do intentionally produce plastic rice, for restaurants to use in displays. The PVC version is reportedly far more expensive to produce than real rice.