Investigators in Philadelphia found a 1-year-old girl reportedly weighing 13 pounds while investigating her parents' home in response to allegations that the couple was neglecting the girl and her 3-year-old brother.

WPVI-TV reported on Sunday that police interviewed the unidentified couple, a 28-year-old man and 29-year-old woman, for hours before releasing them Sunday night, but may still charge them. The children were evaluated at a local hospital during their parents' interview. The 1-year-old was reportedly dehydrated and had insect bites on her body. Her brother was kept in the hospital for observation.

Detectives donned protective suits to investigate the home, which lacked air conditioning but was redolent with dirty diapers and animal feces.

The station attempted to interview a man it referred to as the father, but the man walked away without comment. The couple later left the station using a white blanket to cover their faces. KNTV-TV reported that the couple was picked up by family.

Watch WPIV's report on the ugly conditions at the couple's homes, aired Sunday, below.