(NBC-6) -- Police have made a third arrest in the 2014 killing of a Florida State University law professor, a woman who they say has ties both to the family of the victim's ex-wife and one of the alleged shooters.

The Tallahassee police said Sunday that Katherine Magbanua, 31, was arrested near Fort Lauderdale on Saturday and charged her with murder in the July 2014 slaying of Daniel Markel, who was gunned down in his garage. She was being held Sunday at the Broward County jail without bond pending her transfer to Tallahassee.

In documents released by the police Sunday and previously obtained by the Tallahassee Democrat, detectives alleged that Magbanua had a romantic relationship with the brother of Wendi Adelson, Markel's ex-wife, and lived with Sigfredo Garcia, one of the alleged gunmen, and had two children with him.

Investigators say in the weeks leading up to the killing and immediately thereafter, there were hundreds of calls between Charles Adelson, Wendi Adelson's brother, and Magbanua and between Magbanua and Garcia, often moments apart.

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