philadelphia district attorney seth williams say friday would run reelection year say make regrettable mistake accept gift result city ethics board order pay record fine williams democrat already expect face several challengers may primary election top law enforcement position fifth-most-populous u.s. city last month williams agree pay 62,000 civil penalties end investigation philadelphia ethics board failure disclose gift include nba basketball ticket cash lodge ethics board say large amount penalties impose 10-year history gift prompt fbi interview members prosecutor staff least one gift-givers bureau investigate nonprofit williams found philadelphia inquirer report fbi spokeswoman decline comment friday williams apologize televise news conference decisions accept gift fail report bring much embarrassment shame adverse publicity unfortunately office love say always hold deep regret heart another top pennsylvania prosecutor former state attorney general kathleen kane resign august convict leak confidential grand jury information lie investigators kane democrat sentence 10 23 months prison williams first elect 2009 reelect 2013 first black district attorney history pennsylvania 600-person office handle 40,000 criminal case year minor crimes murder say proud change make office involve senior prosecutors early stag case philadelphia prosecutor seek reelection ethics fine