Despite an intensifying air of anticipation surrounding the case, authorities have yet to charge Peterson with any crime.
Police have previously searched Peterson's home and have seized some of his property, including computers, a 2002 Pontiac Grand Prix and a 2005 GMC Yukon Denali driven by Drew Peterson. An earlier search warrant indicated that police were searching for records from the company that made the GPS system in Peterson's Denali.
The latest warrant, obtained last week by ABC News, said that the police intend to search Peterson's GPS system, which "contains data in a format that is not easily obtained or seized."
It says that police were looking for plastic shavings, blue plastic, lead weights and other objects with scuff marks, circular impressions or any other indication that Peterson had a "plastic or barrel-like object or large storage container" in the SUV.
It also says police are looking at anything that could help them place Peterson's car at a specific location, such as dirt, gravel and soil. Cops are also looking for guns, ammunition, knives, ropes, carpet, or anything else that may have been used as a "weapon or restraint."
The warrant seeks objects that "have any of the following on them: blood, hairs, fingernails, bodily fluids, body tissue, DNA, fingerprints, fingernail scrapings, palm prints, saliva, urine, feces or other biological material which may be evidence of the offense of first degree murder."
"Drew and his children should not have to lose everything accumulated in 30 years of public service,'' the Web site message concludes. "Drew and his children risk losing their life savings, house, automobiles, and may end up impoverished, all by simply defending himself against allegations."
The site bills itself as a the Official Drew Peterson Defense Fund -- People For Justice.
"He's obviously feeling the heat,'' Bosco said. "He believes he is going to court."