Jessica was abducted over two weeks ago after she never made it to her school in Westminster. Her remains were found in an open field in Pattridge Park in Arvada.

Police have received over 4,000 tips and continue to follow leads in the case. Investigators were back at the scene in Pattridge Park on Sunday after receiving a tip that a woman had found something that could be evidence.

Investigators collected the evidence and will process it.

Police are still urging anyone with information in this case to call their tips hotline at (303) 658-4336.

(Copyright 2012 by The Associated Press. All Rights Reserved.)