02/21/2012 01:38 pm ET Updated Feb 21, 2012

Fetus Found In Sewer Pipe At Philadelphia Home; Cops Question Couple In Their 60s

Philadelphia cops are investigating the discovery of a fetus in a sewer pipe at a home in the Kensington area on Monday.

Plumbers made the discovery while working in the basement on pipes leading to a clogged toilet, and then called 911, according to the Inquirer.

Detectives confirmed that the 6-inch fetus was human.

"It may not be a crime scene," Chief Inspector Scott Small told the Philadelphia Daily News. "It appears someone may have had a miscarriage."

Investigators will question a couple in their 60s who live at the home, but NBC reports that a "for rent" sign outside could mean that the couple was renting a room to a pregnant woman.

Cops estimated that the fetus was about 14 to 16 weeks from conception. It did not appear to be decomposed.