Please have a look on this paragraph
"There were some residential quarters in the elevated land area being occupied by government employee. The surrounding was bushy having some trees and commonly inaccessible to the area. One day, a person could notice some skeletal remains lying on the ground under a tree and reported to the police. On having the information, the police and forensic team visited the spot. The spot was almost undisturbed and as per statement of the informer, skull and some bones were found lying under the tree at one place on the ground. On further search, a pair of plastic slipper was kept near the foot of the tree, apparently kept before climbing in bare foot. On further search, a long bone, a torn pant (wearing apparel) and a portion of rope being tied with one of its end in a branch of the tree were also noticed. All the items were brought down for further examination to derive the information contained in them. In course of examination, one cell phone was also found kept inside the pocket of the damaged pant. All the physical evidence was collected for further investigation in this case."
This paragraph is describing a past event.
Then why BEING OCCUPIRD and BEING TIED is used in this context?