Hendricks' decomposing body wasn't discovered until Saturday when one of his daughters knocked on the door, got no response and called police. Radnor Police Lt. Andrew Block said Hendricks died of a self-inflicted gunshot wound. He'd likely been dead six to eight weeks, Block said.
"It's a pretty sordid story," said 5th Ward Commissioner John Nagle, who sent an email to township residents Monday explaining the police and Delaware County Medical Examiner activity outside Hendricks' house over the weekend.
Investigators are awaiting the completion of a forensic analysis of Hendricks' computers. They're looking for any evidence related to the alleged assault, including photos or messages.
"She was picked up by him and he brought her back to the house. Allegedly, over the course of several hours, the sexual assault occurred," Block said. "Just because this person at this point is no longer alive, we're thorough and we'll continue the investigation."
Police are being tight-lipped about the case because the alleged victim is a minor and no charges have been filed.
But a township source said Hendricks apparently told cops that he believed the girl was 18.
Contact William Bender at 215-854-5255 or benderw@phillynews.com, or follow on Twitter @wbender99. Read his blog, "Daily Delco" at philly.com/dailydelco.