Schnagl (left) was reportedly rekindling his relationship with Jelinek (right) before she disappeared last weekend.

Five days after she was reported missing, there's still no sign of Danielle Jelinek. But authorities have now named Aaron Schnagl -- her on-again, off-again boyfriend -- as a "person of interest" in the case.

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Schnagl admits to being the last person to see Jelinek. He says the two of them went shopping in Minneapolis on Saturday night, then returned to his Chisago Lakes Township home for drinks and sex before Jelinek took off on foot Sunday morning. But it sounds like authorities -- who previously said Schnagl has been uncooperative with them -- think Schnagl knows more about what happened to Jelinek than he's sharing.

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