By Emma Farge and Umit Bektas

CRANS-MONTANA, Switzerland, Jan 6 (Reuters) - The Swiss bar where 40 people were killed in a fire at the New Year had not been subjected to any annual safety inspections since 2019, the mayor of the ski resort of Crans-Montana said on Tuesday.

Swiss authorities have been searching for explanations for the blaze, which tore through the "Le Constellation" bar in the early hours of January 1. Most of the victims were teenagers.

"We are profoundly sorry. We did not have an indication that the checks had not been done," Crans-Montana Mayor Nicolas Feraud told reporters, adding that bars in the town are meant to have such inspections each year.

Prosecutors have said the fire was likely caused by sparkling candles igniting the ceiling of the bar's basement, which was covered in a foam material used for soundproofing.

SPARKLER CANDLES BANNED

Feraud said the "Le Constellation" had passed its last inspection in 2019. The soundproof foam on its ceiling was considered acceptable at the time, and a fire alarm was not required due to the bar's size.

"There were never any checks on this soundproofing foam. Our security agents did not consider it necessary," Feraud said.

He said the law does not oblige authorities to verify such materials, but "the courts will have to determine whether this should have been done regardless".

Authorities are investigating the two people who ran the bar on suspicion of crimes including homicide by negligence. On Sunday, police said circumstances did not currently merit them being put under arrest, and they did not see a flight risk.

Feraud said authorities had closed another venue run by the pair and that sparkler candles that likely triggered the blaze have now been banned inside the town's venues.

TWO EXITS

In addition to the 40 dead, at least 116 people were injured. The large number of victims has led to questions about whether the bar was overcrowded.

Feraud said its maximum capacity was 200 people, with emergency exits designed to cater for 100 people on each of its two levels. He said he did not know if the downstairs exit was working that night and that investigators would determine this.

Inspections were also conducted at the bar in 2016 and 2018, authorities said. Before then, the building that houses it sat in a different municipality, Feraud said, pointing to Crans-Montana's creation in 2017 from a merger of four municipalities.

(Reporting by Emma Farge in Geneva and Umit Bektas in Crans-Montana, Writing by Miranda Murray, Editing by Friederike Heine, Dave Graham, Peter Graff)