The FBI is investigating whether an Indiana truck driver accused of raping a Pittsburgh woman is tied to a series of murders in the Midwest and Texas, and Indiana police want to question him about missing Indiana University student Jill Behrman. Law enforcement agencies in the Midwest are working with the FBI to determine whether Randall Bishop, 33, of Paoli, Ind., is connected to six shooting deaths along interstates 70 and 35, police in Indiana and Missouri said. Watch the RTV6 story. Bishop, accused of raping a woman in a restaurant bathroom, is charged with rape and involuntary deviant sexual intercourse. He pleaded not guilty, and is being held with bail set at $1 million, which was increased by City Magistrate Wrenna Watson from $100,000. St. Charles, Mo., homicide detective Rich Plummer has said that his office is working with the FBI to determine whether there is evidence linking Bishop to the 1992 murders of five women and one man. "(The) thing that sticks out is his face. It's his description, his photograph, what we think our killer looks like, his occupation and other things I won't elaborate on," Plummer said. "There's a possibility here, but I don't know if this is the right guy. It's very early and this is an old case." The six people who were shot along the interstates were killed with a .22-caliber weapon. Their deaths have been linked through ballistic evidence. Allegheny County Assistant District Attorney Bruce Beemer said Monday that police want to know whether Bishop can provide any information about the May 2000 disappearance of Behrman. Authorities say that the college sophomore was riding her bike near Bloomington when she disappeared. The bicycle was later found, but Behrman is still missing. Beemer made the statements at Bishop's preliminary hearing in Pittsburgh. But Special Agent Doug Garrison of the FBI's Indianapolis office said Tuesday that Bishop has not been connected to the Behrman case and has not been considered a suspect. Authorities in Pittsburgh requested that Indiana FBI agents interview Bishop's wife, Garrison said. "If we hadn't received this lead from Pittsburgh to interview his wife about the case there, we never would have heard about this guy," Garrison said. Directory assistance could not provide a telephone number for Bishop's home. Bishop is a truck driver for R.B. Carriers Inc., of Jeffersonville, Ind. Employees at the company said the FBI contacted them, looking for dispatching and routing information. Paoli police Officer Matt Gilmore said he was shocked that Bishop was charged with rape in Pittsburgh. "I've dealt with him a couple of times and I thought he was a real nice guy," Gilmore said. "I always thought he was really religious. I remember when we arrested a buddy of his for drinking and assaulting a woman. Bishop and a minister came down and prayed for his soul." "He was home every day. He didn't bother nobody. He seemed like a nice guy, and if he did it, it would shock the crap out of me," neighbor Vickie Denton said. Previous Stories On The Behrman Case:

• June 1, 2001: Bloomington Marks Anniversary Of Behrman's Disappearance
• May 23, 2001: FBI Looks At Possible Lead In Jill Behrman Disappearance
• April 19, 2001: FBI Has New Theory On Behrman Disappearance