Niagara Regional Police are calling on members of the public to check in on their female family members, co-workers with unexplained absences and neighbours as they try to identify a woman's torso found in the Niagara River.

"At this point in the investigation we need the public to start reaching out," said Insp. Jim McCaffer.

Police ended a search for more body parts Saturday, several days after the torso was found floating in the river below Niagara Falls last Wednesday.

Investigators are calling it a homicide, but say it has been difficult to determine where exactly the torso may have entered the water and where the crime scene may be located.

McCaffery and a representative of the New York State police revealed no new information Tuesday but called on members of the public to report any information that could prove helpful to investigators.

"No tip is too small for us to follow up on, someone in the community knows who this person is," McCaffery said.

He said police on both sides of the border were checking missing person's lists for a profile that could match that of the woman whose remains have been found.

Preliminary post-mortem results indicate the torso belongs to a Caucasian woman between 31 and 55 years old.

The examination also indicated the woman had a pierced navel and has had two caesarean sections.

It's believed the torso had been in the water for four to 10 days before it was found.