The senior officer's role during or after the event would also be investigated, officials said.
Perhaps their role in this mess should also be investigated.
The role of the temple in the wider community is also being investigated.
Work is under way to investigate the role of mass vaccination.
He was a leader among those British biologists who investigated the role of natural selection in nature.
Hall also investigated the role of spices in food preservation.
Metro police investigated Brown's role in the sale but did not lay charges.
Current research studies also investigate the role of 'experience taking' in fiction as a means to increase tolerance and diversity.
Instead, his work investigates the role of science within society, creating a narrative between order and chaos.
Only the federal authorities, not the local police, have the power to investigate thoroughly a railroad's role in an accident.
