More than 100 grams of whale has been discovered inside plastic this morning in a supermarket just north of central Tokyo.

The minke whale was found with two types of plastic wrapped around its sashimi-grade flesh.

The cause of death is unknown but foreign shopper Pete Bourke says the thin plastic film tightly placed over its body may provide some sort of clue.

“I’m pretty sure this wasn’t an accident,” says Bourke.

The whale later departed the supermarket wrapped in a third plastic casing in the form of a small plastic bag.