Prosecutors investigating accounting fraud allegations against Samsung BioLogics secured additional evidence that had been hidden under the floor of a company factory. 

The discovery came after prosecutors from the Seoul Central District Prosecutors’ Office raided the biopharmaceutical company’s plant in Incheon on Tuesday. 

During the raid, prosecutors secured servers and laptops that were hidden under the floor after being tipped off by a Samsung BioLogics official.

Prosecutors also came across evidence that the company recently sought to destroy some servers after investigations accelerated.

It was the third such raid after searches in December and March following a Financial Services Commission ruling that said Samsung BioLogics intentionally violated accounting rules ahead of its initial public offering in 2016.