Did anything paranormal happen after?

I live in Jordan and i'm into paranormal stuff.. so two of my friends and myself  went into this abandoned house to do an investigation.We kept investigating for 3 hours ( it's a small house BTW) and we only got a few footsteps sounds and a couple of disembodied voices..I am not even sure if the voices are paranormal.Anyways, we packed our stuff and on our way out the lights in the house lit and kept blinking for 10 seconds and we all heard a growl, then all the lights went off and everything became quiet ( the house owners left the house 33 years ago and there is no electricity in the house what so ever).So the question is, should I go back in and get some more evidence or was it a warning from the poltergeist that is haunting the house. hmm....