As McDonald's Japan struggles to repair its image, tarnished from last year's expired meat scandal, two new incidents related to its Chicken McNuggets surfaced in restaurants in Japan in the last week, a company spokeswoman admitted Tuesday.

She said a piece of blue vinyl was found by a customer Saturday in a chicken nugget purchased at a McDonald's restaurant in Misawa, Aomori Prefecture.

The fast-food giant also admitted it had received a similar complaint by another customer who bought chicken nuggets on Dec. 31, this time at an outlet in Koto Ward, Tokyo.