Halifax Regional Police are asking for the public's help in an ongoing murder investigation for the only homicide of 2013 that has not resulted in any charges.

Raymond Floyd Peters, 24, was shot several times during an altercation in a backyard at the corner of Primrose Street and Pinecrest Drive in Dartmouth on Jan. 7.

Peters was able to escape to an apartment on Jackson Road, where an ambulance later picked him up and took him to hospital. He died in hospital the next day.

The shooter ran away before Halifax Regional Police officers arrived and officials believe the suspect and victim knew each other.

Halifax Regional Police said the suspect in the case is a black man in his 20s, who is about five feet eight inches tall. He was wearing a blue hooded sweatshirt and black pants at the time of the shooting.

Peters's slaying was the first homicide in the Halifax Regional Municipality this year and the only one of the four homicides this year in which charges have not been laid, said Halifax Regional Police.

Vincent James Steele was charged with second-degree murder in March after police found the body of Neema Barati, 20, in a home on Seaforth Street in Halifax.

Christopher Kenneth Hutchinson was charged with second-degree murder on June 4 after Tara Lynn Park was found stabbed in an apartment building on Albro Lake Road in Dartmouth the previous weekend.

Several weeks later, Paul Trevor Calnen was charged with second-degree murder in the death of Reita Louise Jordan, a Tantallon woman who was last seen by friends on March 19. Her body has not been found.