New Suspect Arrested in 2014 Murder of Florida Professor Dan Merkel

A woman who Tallahassee police allege was the facilitator of a murder-for-hire plot targeting prominent Florida State University law professor Dan Markel was arrested Saturday afternoon on a warrant for first-degree murder.

Katie Magbanua, 31, was picked up by police in Davie, Florida, following a traffic stop outside a busy shopping plaza, according to the department spokesman Sgt. Mark Leone. She was handcuffed and taken to Broward County Jail in Fort Lauderdale, Leone told

Markel, a nationally renowned criminal justice scholar, was killed in July 2014, shot twice in the head while sitting in his car in his garage. Police have alleged that the motive for the murder was the bitter divorce between Markel and ex-wife Wendi Adelson, and her family's "desperate desire" to have Wendi and her two children move closer to them in south Florida, where the family runs a lucrative dental practice. Markel had successfully fought in court his ex-wife's attempt to relocate with the children.

The Markel case was featured last month in a 20/20 program, "In-Laws and Outlaws."

In May of this year, police arrested Sigfredo Garcia and Luis Rivera, two south Florida men with criminal histories, and charged them in Markel's murder. Both are facing the death penalty if convicted. Both have pleaded not guilty.

Magbanua is suspected of being the link between the two alleged hit men and Wendi Adelson's family. In a probable cause affidavit police allege that Garcia and Rivera were "enlisted to commit this egregious act." Authorities contend Garcia and Rivera traveled from Miami to Tallahassee two days before the murder in a rented green Toyota Prius, shot Markel in broad daylight, and then drove back to Miami immediately following the murder.

The first person Garcia called after the murder, police say, was Magbanua.

She is the mother of Garcia's two children and has also had a romantic relationship with Wendi Adelson's brother, Charlie, a well-to-do periodontist in south Florida.

At the time of the arrests of Garcia and Rivera, police also sought charges against Magbanua and Charlie Adelson, but prosecutors declined at the time to proceed against anyone other than the two alleged hit men.

Garcia's attorney, Saam Zangeneh, told ABC News that Magbanua's arrest comes as no surprise to him. "Desperate times call for desperate measures," he said. "The prosecution has made her a focal point of this investigation. I am eager to read the arrest warrant and see why Katie was arrested."

An affidavit for Magbanua's arrest prepared in May, alleged that she had deposited over $50-thousand in cash into her bank account in the 16 months following the murder, and that she had also started receiving regular checks from the Adelson family's dental clinic, that were signed by Wendi Adleson's mother, Donna.

An attorney for Magbanua, Tara Kawass, declined to directly comment on the allegations, but released this statement to ABC NEWS late Saturday.

"Katherine is a single mom who has no prior convictions. There was no reason to arrest her like this. Our sole priority right now is getting her on bond so she can take care of her two kids."

No one in the Adelson family has been charged in connection with Markel's murder, and family attorneys have described allegations by police as "fanciful fiction."