Missing iPhone's signals led Florida police to suspect

In the days after Melissa Lewis was strangled inside her South Florida garage, puzzled police detectives questioned friends and relatives, and concluded that the attack on the attorney was random. Then a clue emerged that led police to her killer. It was her missing iPhone.

Police tracked data — relayed from the missing phone to cellphone towers around South Florida — to several locations, including a Northwest Miami-Dade neighborhood and railroad tracks in Fort Lauderdale.

Police say the phone's movement mirrored that of Tony Villegas, 44, the estranged husband of Lewis' best friend.

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