Investigators could be seen placing evidence markers and putting items into bags during an investigation behind some Delaware County homes early Monday after the body of an unidentified woman was found.
Upper Darby police said officers responded to the alley behind homes along Greenwood Avenue, off Church Lane, late Sunday night.
"At about quarter to 12 last night, the Upper Darby Township Police Department received a call for, what the caller stated, believed to be human remains wrapped in a mattress," Upper Darby Police Superintendent Timothy Bernhardt said. "The uniform patrol division responded and confirmed there were human remains wrapped in what we believe to be an older style mattress."
Get Philly local news, weather forecasts, sports and entertainment stories to your inbox. Sign up for NBC Philadelphia newsletters.
Police asked for people to avoid the area, which is across the street from the Fernwood cemetery.
Multiple yellow evidence markers could be seen on the ground and officers could be seen putting items into bags overnight. An ambulance with its lights on was on the scene for an extended period of time.
Local
Breaking news and the stories that matter to your neighborhood.
Then, around 6 a.m., the medical examiner's office arrived. Investigators confirmed the body was of a woman but did not reveal a cause of death. Police also said they don't have any active missing person cases in Upper Darby involving a woman. They'll be taking a broader look at missing person cases in neighboring jurisdictions.
If you have any information on the incident, call Upper Darby Police.
Sign up for our Breaking newsletter to get the most urgent news stories in your inbox.