The DA of Alameda County's to consider involuntary manslaughter in the investigation into the Berkeley balcony collapse.
Nancy O'Malley confirmed last night that her office has opened a criminal investigation into the incident that killed six students and left seven more injured.
However she says multiple questions must be answered before a decision can be made on criminal liability.
A team of 66 investigators will be at the disposal of the investigation.
DA O'Malley has promised it will be thorough and exhaustive:
