Months before Przemyslaw Jeziorski, a marketing professor from the University of California, Berkeley, was killed, he filed a restraining order against his ex-wife.

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