The ex-wife of University of California, Berkeley professor Przemyslaw Jeziorski, who was gunned down in broad daylight in Greece earlier this month, has been arrested.

Greek police have arrested at least five people in connection with the killing of a UC Berkeley professor, including the professor’s ex-wife, according to CNN and local news reports.

Przemyslaw Jeziorski, who taught quantitative marketing as a tenured associate professor at Berkeley's Haas School of Business, was killed on July 4 in Athens by an attacker who shot him in the chest