American air safety experts were sent to assist Canadian investigators, who had primary responsibility for the recovery operations and the investigation.

In more recent times, many governments now require the airline to provide further information included to assist investigators tracing criminals or terrorists.

The offer would expire that night if she left without agreeing to assist investigators.

The information gleaned from them is then used to assist other investigators in moving against major drug dealers.

The detailed information you provide will assist investigators as they look into reported violations.

The outline provides context for photographs of the crime scene, and assists investigators in preserving the evidence.

The charge sheets list a number of instances in which the suspects are said to have threatened another soldier with death if he assisted investigators.

To assist investigators, the plan also calls for the creation of a centralized toll-free telephone number where abuse can be reported.

The center also assists clinical investigators with translational research and clinical trials.

Examination of these remains may give information that can assist investigators in identifying a victim.