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The Davie Police Department recently announced that Donald Lawless was responsible for the 1987 mutilation and murder of 28-year-old Marilyn Decker

The ex-con, who died in 1995, was linked to Decker’s murder via DNA evidence

Davie Police cold case detective Eddy Velazquez tells PEOPLE that he suspects that Lawless is responsible for additional murders. “I think he's definitely involved in others,” he says. “100%. 100%"

After more than three decades, Florida authorities have solved the murder of a woman who was found mutilated and floating in a canal.

The Davie Police Department recently announced that Donald Lawless was responsible for the 1987 murder of 28-year-old Marilyn Decker.

The ex-con, who died in 1995, was linked to Decker’s murder via DNA evidence.

Decker’s bo

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