17-Year-Old Girl Killed in Tioga-Nicetown Stabbing

There are new developments in the tragic murder of a Philadelphia mother. 17-year-old Anita Cotton was stabbed to death during a fight early Sunday morning.

Police say just after 9 a.m. Wednesday morning, a 17-year-old girl, her mother and sister came to police headquarters to speak with homicide detectives about her alleged role in the stabbing death of 17-year-old Anita Cotton, a few hours later she was released.

"They were very cooperative at this point in time she has been released pending further investigation by homicide detectives and the district attorney's office," said Philadelphia Homicide Unit Captain James Clark.

Police say Cotton, the mother of a 2-year-old daughter, was stabbed once in the neck and killed early Sunday morning. According to police, she was involved in a brawl between two groups of teenage girls, when it turned deadly in the parking lot of this Walgreens at Broad and Hunting Park. Police believe the killing stemmed from a fight on South Street hours earlier.

"It was bad blood between the two groups. It started on South Street, then in the neighborhood and ultimately led to her getting killed," Captain Clark explained.

Investigators say the two groups of girls left South Street on the train and got into a second confrontation as they got off the Broad Street line. Cotton was locked in a one-on-one fight with the 17-year-old old girl when she was stabbed once in the neck, according to police.

"We'be gathered all the information, all the video, we sent everything over to the DA's office and right now they are declining to charge , but we'll see where that may lead," said Captain Clark.

This is a developing story, please stay with FOX 29 for updates.