Remains believed to be those of a woman reported missing in early 2025 have been recovered after investigators followed up on a tip that led them to a home in Tyngsborough, Massachusetts.
For months, Jill Kloppenburg had been unaccounted for. Friends reported her missing in February 2025 after realizing they hadn’t heard from her since a text in November. Investigators were able to track Kloppenburg’s cell phone activity, and it appears to stop on January 14, 2025.
Then last week, a call came into police in Nashua, New Hampshire with information that got investigators looking at this in a completely different way. Investigators say the tip led them to 40-year-old Shawn Sullivan, who had allegedly told the caller what happened to a woman named Jill earlier in 2025, and that led authorities straight to a home on Audrey Avenue.
From there, they honed in on the garage. Detectives used ground-penetrating radar, focusing on a section that had been patched, and picked up on something beneath the concrete that didn’t match the rest of the floor. Once they started digging into that area, they uncovered the remains that had been concealed in a plastic bag.
Authorities say they are confident that individual is Jill Kloppenburg, although final confirmation is still pending through the medical examiner. Sullivan, who lives in the home with his family, has since been charged in connection with the case.
Authorities say Kloppenburg and Sullivan knew each other, and that she had been inside his home on prior occassions. Apparently, the two had reportedly been seen together not long before she disappeared.
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