Carly "Charli" Scott
Maui Police Department/AP
02/15/2014 at 02:00 PM EST
A search is underway for a missing pregnant Hawaii woman whose SUV was found torched in a rural area.
Carly Scott's mother reported her missing Monday. She told police a family member last saw the 27-year-old Sunday night at her sister's home in Haiku, in northeast Maui.
The search continued Friday for Scott, who is five months pregnant.
Maui police said someone in the search party found "possible evidence" Thursday. But police aren't revealing what was found. They're asking searchers who find possible clues not to touch or move them.
The Makawao woman's burned 1997 Toyota 4Runner was found Wednesday in Haiku's Peahi area. Before the vehicle was located, police found Scott's dog in the nearby community of Nahiku, the Maui News reported.
Scott's ex-boyfriend, Steven Capobianco, tells TV network Hawaii News Now she picked him up Sunday night and drove him to Keanae – several dozen miles away on the two-lane, winding Hana Highway – so he could fix his truck. Scott's dog, Nala, was with her when she picked him up, he said.
Capobianco said that afterward, Scott was driving behind him to Haiku but he lost sight of her SUV at some point. He said he figured she arrived safely at her destination.
"I sent her a text that said, 'Thank you,' but I figured she was working, that's why she didn't get back to me right away," Capobianco told the news station. "It wasn't until the cops showed up at my house at 5:30 in the morning the next day that I realized something was wrong."
Capobianco said police questioned him and administered a lie-detector test, which he was told he failed. But he told the station he "absolutely" did not hurt Scott, whom police described as 5'10" and weighing 160 lbs.
Police have not made any arrests or named any suspects.
"I mean, it's undeniable that I'm probably the prime suspect, so they're not going to tell me details," Capobianco said.
Capobianco said he and Scott have been broken up for several years but remained friends and "occasionally hooked up." He said he believes he's the father of her baby but could not confirm the child's paternity.