A Waterloo man and former long-haul trucker was arrested Wednesday on out-of-state warrants, charging him with killing three women and a fetus nearly 30 years ago.

Authorities accuse 58-year-old Clark Baldwin of murdering two women in Wyoming in 1992 and a third in Tennessee in 1991. According to court records, the bodies of the three women -- two of whom were pregnant -- were all discovered in a ditch or remote areas near interstate highways.

According to a press release from Tennessee's 22nd Judicial District Attorney's Office, 33-year-old Pamela McCall of Topping, Va., was killed by strangulation. She was 24 weeks pregnant at the time of her death and the unborn child was also deceased. McCall's body was found March 10, 1991, in Spring Hill, a city located about 36 miles south of Nashville.

Authorities have charged Baldwin with two counts of murder in the case -- one for McCall's death and the other for the death of her fetus.

The two Wyoming homicides occurred just over a year after McCall's death, in March and April of 1992. According to court records, both Wyoming homicides were similar in nature to McCall's homicide, with a truck driver possibly being the suspect.

According to a press release from the Wyoming Division of Criminal Investigation, the names of the women found dead about 400 miles apart remain unknown. The victims are identified in court records as “Bitter Creek Betty” and “I-90 Jane Doe”. Both women were believed to be in their late teens or early 20s.

Investigators said they linked Baldwin to the unsolved murders after taking his DNA from his garbage and from a shopping cart he used at the Waterloo Walmart.

Baldwin was being held in the Black Hawk County Jail Thursday, awaiting extradition to Tennessee where he'll be tried first. Baldwin will face the two murder charges in Wyoming once the Tennessee charges are resolved, authorities said.

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