Austrian beauty influencer Stefanie Pieper, 31, was found dead in a suitcase in a Slovene forest after going missing following a Christmas party.
Her ex-boyfriend allegedly confessed to strangling her, hiding her body, and later leading police to the site where he buried the suitcase.
Neighbors reported hearing an argument and seeing the ex-boyfriend in her building the night she disappeared, Fox News has reported.
He was arrested in Slovenia after being found near his burning car and later extradited to Austria, where two male relatives were also detained in connection with the case.
Authorities say he has agreed to cooperate with investigators.
