The Virginia medical examiner's office says it will likely be weeks before the cause of death is determined for two Quantico-based FBI agents who died during a training exercise off the coast of Virginia Beach, reports the Associated Press.
The FBI won't say exactly what kind of training Special Agents Christopher Lorek and Stephen Shaw were participating in before their deaths on Friday. They were members of an elite Hostage Rescue Team.
Among other things, the team is trained in how to fast-rope out of helicopters, SCUBA dive and conduct close-quarter battle.
A spokesman for the state medical examiner's office in Norfolk, says experts are waiting for toxicology results to come back before making a determination on the cause of death.
The Hostage Rescue Team is the agency's only full-time counterterrorism unit.