Pictures show Swiss ski bar owners renovating the club themselves.

Photos from 2015 show the owners taking part in renovation work at the Le Constellation bar, and Swiss authorities say an investigation is ongoing after a New Year’s Eve fire that killed dozens.

Photos from 2015 posted on a social account show the owners of Le Constellation taking part in renovation work at the Crans‑Montana bar, including ceiling panelling and foam being installed. A New Year’s Eve fire at the venue later killed dozens and injured many others. Swiss officials have said investigators are examining the materials used and the venue’s safety provisions. The owners have been questioned and officials say they are cooperating with the inquiry. Known details: - Social-media photos show the couple present during renovation work on the basement club in 2015, with ceiling panelling and foam visible. - Attorney General Beatrice Pilloud said investigators assume sparklers attached to Champagne bottles started a fire that spread to the ceiling material. - The owners have been questioned and are reported as cooperating while authorities examine materials, emergency exits, fire extinguishers and occupancy rules. - Pilloud said a team of 30 is involved in the investigation, that victim identification is ongoing, and that a negligent‑homicide (manslaughter) inquiry could be opened. Summary: The publication of renovation photos has drawn attention as investigators review how the club was fitted and whether safety standards were met after a New Year’s Eve fire killed dozens. Authorities continue identification work and are investigating materials and safety arrangements; whether formal criminal charges will follow is undetermined at this time.