Nov 6, 2005 7:55 am US/Central

(CBS) MISHICOT, WI Police have set up a search perimeter in the Mishicot area in relation to the disappearance of Teresa Halbach. CBS 5's Jennifer Kolbusz was in Mishicot Saturday night where a 9 PM press conference was held, and reports that authorities closed off several roads in the area.



She also says that authorities have located Teresa Halbach's vehicle at Avery Auto Salvage near Mishicot. The vehicle has been transported to a crime lab in Madison to analyze evidence.



Authorities held another press conference Sunday afternoon, and Sheriff Jerry Pagel of the Calumet County Sheriff's Department told reporters they will be executing a lengthy search that will cover a 40 acre parcel of land and hundred's of vehicles.



Also, dive teams from the Winnebago County Sheriff's Department are being utilized. There is water adjacent to the area in question.



Sgt. Mark Wiegert of the Calumet County Sheriff's Department said Teresa Marie Halbach, a resident of the St. John area, was last seen about 1:30 p.m. Monday in Manitowoc.



She works as a freelance photographer for auto dealers and had been taking pictures of vehicles up for sale. Jennifer Kolbusz reports that Halbach was at Steven Avery's property, photographing a vehicle for Auto Trader magazine. However, Jennifer says that Halbach did continue on to another appointment before she disappeared.



The investigation "indicates it is out of character for her not to have contact with family or friends for this length of time," Wiegert said.



Calumet County Sheriff Jerry Pagel said her parents reported her missing Thursday, and his department and police in Manitowoc County immediately began investigating. Calumet County has been named the lead investigative agency in this case, and anyone with information relevant to this case are asked to call the Calumet County Sheriff's Office at 920-849-2335.



"This is behavior that is not normal for this young lady," Pagel said. "It's suspicious. Parents, friends, relatives, nobody has had any contact with her since the 31st (of October)."



Pagel said Halbach has no criminal, medical or mental history indicating she may have left on her own.



Steven Avery, a Wisconsin man who served 18 years in prison for a rape he did not commit, may have been the last person to see Halbach, a sheriff said Saturday.



Avery, the Two Rivers man who was released from prison in 2003 after DNA evidence exonerated him in the 1985 attack, told investigators Thursday evening that Halbach took pictures of a van that he wants to sell.



Avery and another man in the area are the last to have seen Halbach, but it's unclear who saw her last, said Calumet County Sheriff Jerry Pagel.



"I'm classifying it as coincidental at this particular time," Pagel said. "Just because it's Steven Avery, doesn't mean that he had anything to do with it."



Halbach is described as 5-foot-6 and 135 pounds, with light brown hair and brown eyes.



She was wearing blue jeans, a white button-down shirt and a summer jacket when she last seen, police said.



She was driving a dark green 1999 Toyota Rav4 with a Wisconsin license SWH582.

