Swiss bar owner Jacques Moretti was questioned by lawyers acting for victims' families on Wednesday, over the New Year's Day fire disaster in Crans-Montana that left 41 people dead and 115 injured.
He arrived for the hearing in Sion with his wife, Jessica, whose lawyer Yaël Hayat described the latest hearings as "moments of truth". Jessica Moretti faces questions on Thursday.
Ahead of the hearing, one mother told Swiss TV she needed to know what had gone wrong and why.
"What's important is that the whole truth comes out," said Laetitia Brodard-Sitre, whose 16-year-old son Arthur died in the fire.
"There must be no more lies," she told public broadcaster SRF. "I want everyone to take responsibility; politics and parties don't matter to me."
