siekać ?:

He ordered his secretary to shred important documents when government inspectors started investigating his business affairs. | 2. Shred some lettuce into the salad bowl. | 3. shredded carrot/paper

shred - shredded - shredded | shredding

"Could you shred me a piece of bread? There is not a shred of evidence to support the theory. There is not a shred of truth in it. The papers will be shredded, pulped, and recycled. She had shredded the thing with her fingers."

They may be shredding documents.