Valmiki Ramayana Ayodhya Kanda Sarga 119 Shloka 18

वनचराः dwellers in the forest, धर्मचारिणः following the righteousness, ते तापसाः those ascetics, तस्य वनस्य of that forest, सञ्चारम् movement, राक्षसैः with demons, समभिप्लुतम् inundated, तौ addressing both of them, ऊचुः said.

The righteous ascetics dwelling in the forest informed both Rama and Lakshmana that part of the forest infested by demons.