There was no indicator that it was no parking, but definitely not obstructing any moving vehicles. From what I heard from the guard, that spot is for contractors.
No construction going on at that time. But when me and the guard picked up the bag of sand.. It reeks of urine. Assuming that it was from a litter box.

Today i just handed over the police report, requested them to provide their name of insurance company, they did provide, but when I called up their insurance company, they have no idea on that said building. Keep asking me to deal with the building management. But the staffs of the building management sounds very unhelpful and unapologetic. What can I do then?