Nearly four months after Ottawa resident Christine MacNeil was shot to death in a Gatineau hotel, police have released a computer-generated sketch of a person of interest in the case.

The 25-year-old was shot at the Four Points Sheraton Hotel on Rue Laurier shortly after 8 p.m. on Oct. 19, 2015.

Christine MacNeil homicide person of interest sketch Gatineau police 2015

Gatineau police released this computer-generated sketch of a person of interest in the homicide of Christine MacNeil in October 2015. (Gatineau police)

The hotel was placed in lockdown until the following day, Gatineau police said in a media release issued Tuesday.

The person of interest is described as a Caucasian man between 50 and 55 years old, standing five feet 11 inches tall and weighing about 170 pounds.

He has brown eyes and wore a salt-and-pepper goatee at the time, as well as a gold loop earring in each ear and a black baseball cap.

"We have reason to believe that [he may] have key information that would help the investigation, and we would like to clarify his connection with this unfortunate event," police spokeswoman Andrée East is quoted saying in the media release.

Anyone with information is asked to call the Gatineau police homicide tip line at 819-243-4636 or to submit a tip online here.

police shooting four points sheraton hotel gatineau

Police surrounded the Four Points Sheraton Hotel in downtown Gatineau after the shooting, and the hotel remained in lockdown until the following day. (CBC)