Philadelphia police are investigating a series of unprovoked pit bull attacks in Center City that injured people and their dogs.
On Tuesday, authorities said a person of interest is now in custody, but charges have not yet been filed.
One of the attacks happened on Monday, December 29, shortly after 5 p.m. near 12th and Chestnut streets. Brian Lovenduski says his 12-year-old miniature pinscher, Ziggy, was attacked during a routine walk…