Detectives investigating the beating death of a Calgary man last year are hoping the release of additional pictures of a person of interest will help solve his killing.

Police think the person in this grainy surveillance camera image has information about the killing of Trevor Jordan Lomond last September. (Calgary Police Service)

Trevor Jordan Lomond, 33, was found severely beaten at a house in the community of Rosscarrock in the 1600 block of 42nd Street S.W. on Sept. 13, 2016.

He died in hospital just over a week later.

"Although the CCTV photos are of poor quality, police are asking the public for assistance in identifying the person, who is believed to have information about the murder," police said in a release.

Last week, investigators released pictures of a car that was seen in the area where Lomond was attacked, and of a man who they think was driving it.

The newer-model Toyota Camry might have been a rental, but it's not known from which company.

The release of those pictures resulted in police receiving new information about the case, and led to the release of the additional photos on Tuesday, police said.

Anyone with information about this man, or the killing of Trevor Jordan Lomond last September, is asked to contact police or Crime Stoppers. (Calgary Police Service)

"Detectives thank the public and the media for their continued assistance in this investigation," police said.

The residents of the home where Lomond was found told investigators they did not know the victim.

At a media availability on Jan. 13, Lomond's mother, Sherry Duperre, made a public plea for anyone with information about her son's death to come forward to police.

Anyone with information is asked to call the homicide unit tip line at 403-428-8877 or contact Crime Stoppers anonymously.