Miami-Dade Police Department Director Juan Perez announced Friday his agency’s homicide squad is leading the investigation into the pedestrian bridge collapse at Florida International University and will determine if criminal negligence charges apply.

“We’ve got to look at the reality that there may be some negligence down the line,” Perez said during an interview on WIOD 610 AM Friday morning. “It will help determine whether someone is liable for this … It’s obviously an accident either way. We have to look to see if somebody contributed to that accident.”