If you have noticed a shortage of your favorite chocolate bars in the shops, it’s because there has been a recall of millions of bars by the producers.

Confectionery giant Mars announced a Europe-wide recall Tuesday after a customer in Germany found a piece of plastic in one of its chocolate bars.

The move involved Snickers, Mars bars, Milky Way Minis and Celebrations boxes of mixed candies, according to Mars Germany’s spokesman Raoul Hamacher.

“The affected bars were produced in the Netherlands and from there … distributed to several European countries,” he added. Hamacher did not say what countries were covered in the recall.

Hamacher said earlier that the possibly impacted candy bar lines were produced between mid-December and mid-January.

“We deliberately expanded the time span a bit to be on the safe side,” Hamacher said.

The company could not immediately say how many chocolate bars might be involved in the recall, he added.

According to local media reports, Mars Germany alone produces nearly 10 million snacks every day.