New Delhi, April 28 -- A former employee of a popular nightclub whose roof collapsed a year ago and killed 236 people told a judge Monday that the owners were fully aware the structure was deteriorated.

Gregory Adames testified against siblings Antonio and Maribel Espaillat, who are accused of involuntary manslaughter and involuntary assault and battery following the collapse at the legendary Jet Set club in Santo Domingo.

"They knew because I sent them photos, I sent them videos of all the problems that were there. That shouldn't have happened; not a single person should have died there," Adames said.

Attorneys for the victim's families asked in court for the siblings to be accused of voluntary manslaughter.

"We hope that happens," J...