The discoveries were either false alarms or isolated incidents, not a coordinated attack, said the police who received the reports of glass, needles and bits of plastic over the last several months.
Rikskriminalen has therefore referred the cases back to local police authorities, according to Dagens Nyheter newspaper.
On April 1, the National Police Commissioner was given the task of coordinating several ongoing investigations across the country. A slew of incidents were reported and and police referred the cases onto the National Laboratory of Forensic Science.
There were approximately 80 reports, of which 30 involved chicken and the rest preprepared foods, sausage, bread and fruit.
Anders Wretling, head of the national laboratory’s investigation unit, concluded that there had not been “any coordinated attack against the food supply.” These are isolated incidents, he told DN.
Sabotage was first suspected when several people found glass bits in frozen products from Kronfågel, a chicken factory in eastern Sweden, which led a grocer to remove the company’s products from his freezers.
Kronfågel recalled its products, and stepped up its security checks during the production process through measures such as the introduction of x-ray machines.