Young said that the questioning of "Jersey" is in line with normal police procedures involved in the Lisa Irwin case.
Jersey was sought on Oct. 10 after police brought a picture of him to the door of a neighbor of Irwin's and asked him if he had seen him.
The neighbor told police that he had seen the man, who he described as in his 20s, riding a bike and carrying a backpack.
The neighbor, who has lived in the neighborhood for 40 years and says he knows all of its residents, said he is sure the man does not live close by and was suspicious of the man even before Lisa disappeared.