This was an incident that happened to my sister a couple of days after my uncle's death. There were a couple of relatives in my grandmom's house the day after my uncle was cremated and for some reason they all decided to sleep in the same room though there were two other big rooms.
My sister was sleeping next to my mom on a mattress spread out on the floor and she was woken up by the sound of an alarm. It continued to ring and strangely she was the only one who heard it. When she woke my mom up and told her about this, mom thought she was just hallucinating but my sister heard the sound loud and clear. She told me that she was not hallucinating and that she was wide awake and no one heard it other than her.
After some time she managed to get some sleep and this time she felt something falling on her head. At first she was really puzzled as to what it was but she tells me it was hard like someone was dropping marbles on her head. She was so freaked out as she could feel it but she couldn't see anything. She just pulled the blanket over her head and prayed that it would be morning soon. Nobody believed her, but I do, she's definitely not the kind who would fake such things and when she was narrating the story I could see genuine fear in her eyes.
We later learned from an expert that someone had performed black magic on that house and the only reason that we were not facing the full consequences of that was because the spirit of my granddad (who had died a couple of years before my uncle) was preventing it from entering the house. We then asked this person to rid the house of all the evils and we sold it.
I still remember this eerie feeling my sister and I would get when we were in this area facing the backyard the house. We would always feel that someone or something was there. Till date I get shivers when I think of what happened. I was just fortunate to not have witnessed anything my sister did.
I still wonder why that happened to my sister.