Nova Scotia is offering a reward for information that leads to a conviction in a three-year-old homicide case in Halifax.

Halifax Regional Police responded to a report of a stabbing at 117 Pinecrest Drive in Dartmouth shortly after 11 p.m. on Jan. 8, 2011.

Officers found a 19-year-old woman unresponsive and suffering from a single stab wound to the chest. Keya Simon was pronounced dead at the scene.

Investigators say Simon’s 32-year-old sister had also been stabbed. She was treated for non-life-threatening injuries and later released from hospital.

Police believe a party was taking place at one of the apartments in the building and that a fight broke out.

They say the altercation spilled out onto the front lawn and that both Simon and her sister were stabbed.

Investigators say a large crowd at the site provided limited information and they believe there are people who know more.

"Major crime investigators believe that people in our community have information about Keya's death that would assist in progressing the police investigation and we are hopeful the incentive offered through the reward program will encourage them to speak up," said Chief Jean-Michel Blais of Halifax Regional Police.

"We encourage these people to do the right thing and report what they saw or heard to police so we can move forward with the investigation."

Anyone who shares information that leads to an arrest and conviction in the case could receive up to $150,000 through the province’s Rewards for Major Unsolved Crimes program.

The program was launched in October 2006 as an additional tool to help police gather information on unsolved crimes.

People with information are encouraged to call 1-888-710-9090.