This photo taken on Feb. 7, 2006, and made available by Florida State University shows law school professor Daniel Markel. Markel was shot in the head at his home in Tallahassee, Fla., on Friday, July 18, 2014. (AP Photo/Florida State University)
Florida State law professor Daniel Markel was mysteriously shot dead in his home last week.
AP

Why was a Florida State University law professor shot in the head in his home? The mystery has rankled friends and family of the Harvard grad.

41-year-old Daniel Markel, who received both a bachelor’s and law degree from Harvard, was shot the morning of July 18 in his garage, with his keys in his unlocked car and with no signs of forced entry. He died the next day from the wound.

No arrests have been made, and police are struggling to come up with a potential motive. They do know one thing, however: his death was a premeditated murder.

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The lack of forced entry could mean Markel and the shooter knew each other, police told CNN. They do not believe it to have been a botched robbery. One lead is nearby surveillance video showing a “vehicle of interest,” a silver or light green Toyota Prius, according to WCVB. Otherwise, clues are at a minimum.

The Dan Markel Memorial Fund, a website set up to raise money for Markel’s sons, has raised more than $51,000 as of Monday. One anonymous donation in the amount of $25,000 was made.

Markel was editor of the Harvard Law Review. Along with his duties teaching law at FSU, he ran Prawfsblawg.blogs.com, a website where he and other law professors doled out legal wisdom and opinions. “His boundless energy was at the center of this community; it made it run, it gave it life,” his fellow website writers wrote after hearing of his death.