May 3, 2016 12:06 am Officials Investigate Oil Sheen in Schuylkill River Officials are investigating an oil sheen that was spotted in the Schuylkill River in Philadelphia. NBC10’s Denise Nakano has the details. US & World Videos 1:25 Residents in Montgomery County warned of possible fraud after mail stolen from collection boxes 2:09 ‘It feels like a slap in the face': Father responds to reinstatement of officer accused of killing son 1:41 11-year-old cancer patient receives floods of motivating letters from strangers near and far 1:43 An Ocean City boardwalk hotspot continues to delay reopening after a series of hold-ups 0:53 One of Philly's most popular cheesesteak spots is set to reopen Wednesday