Thursday 2/18-7:15 am Lemiwai St nr B St.- 3 walkers trespassing

Observed three people trespassing on the " for sale by owner" property on Lemiwai within sight of my upper lanai- They were walking around and peering into the windows- the house is clearly marked no trespassing and posted with alarm signs .I hurriedly walked down to investigate and they were already leaving- Three males in walking attire (sweats) one with coffee cup- They were already too far away to ask them if they needed help- my thoughts are that "no trespassing sign" and"for sale by owner" are a mixed message, and that unoccupied homes are a "trouble magnet"