I lived in this small hometown in northwestern New Mexico, where I lived in a house that I rented for a short time. I remember moving in and the landlord never did mention anything happening in this house so I had no idea what I was in for. The first few months living there was quiet and nothing out the ordinary, until one day I started to feel like I wasn't alone. Some friends had come over for a housewarming party. I had never had any feelings of not being alone until some friends had come over this night. I wasn't the one who had the experience this one night though. One person happen to fall asleep on the couch in the living room while everyone else were asleep on the floor and I was in my bedroom. Everyone was sound asleep until this person happen to jump up and yell out " HELP!" We all jumped up half asleep trying to figure what had happened... Asking this person what happened and if he was dreaming? Just looking at his face you could tell he wasn't dreaming, as pail and scared as he was.
After he calmed down a little bit we were able to finally hear what he was trying to tell us. He had said that he was sleeping and he could feel someone grab him by his shirt. He thought it was one of us in the house messing with him. He tried telling this person to leave him alone he was sleeping. It didn't stop... He said whoever or whatever it was started to shake him vigorously that he woke up and saw a figure but it had no face, it was just black in the face. When he awoke from being shaken and screamed out for help he said the black figure just faded into the shadows inside the house. We don't know what he saw nor did I ever see this figure while living there. But he said he knows what he saw and swears he wasn't dreaming. I have never seen or experienced anything of any sorts like this before I had any company over. So I don't know if it was because I had people over or not?... He left and never came to visit after this had happened to him...
I don't think that anything was attached to your house because had it been, atleast you would have felt it. As Alina said, something might have been passing through your house, it might have disturbed your friend for reasons not known. Perhaps you could have some interaction with your friend. If he is sensitive to paranormal or if he had any other experiences or encounters.
Kindly do respond.
Regards and respects to you.
SDS