Jacques Moretti, who is in custody, told Swiss prosecutor’s office he forced door open and found people lying behind it

The French owner of the Swiss bar where 40 people died in a fire during new year celebrations has told investigators a service door had been locked from the inside.

Jacques Moretti, co-owner of the Constellation bar in the Swiss resort of Crans-Montana was taken into custody Friday, as prosecutors investigate the tragedy.

Most of the 40 people who died were teenagers, and another 116 people were injured.

Moretti told the Valais public prosecutor’s office that he had found out about the locked door just after the deadly fire.