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

G reek 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.