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.

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

Greek officials say the broad-daylight attack came one day after a custody hearing over the victim's 10-year-old twins.