So "homicide detectives" are investigating what may be a link between a device (or devices) seized at a Santa Monica condo and the explosion that killed the three deputies. In short, not a "training exercise."
Gosh, I wonder who might be making explosive devices in Santa Monica and why.
From a NYT piece this morning:
>>The circumstances around the blast are still unknown, and it was unclear on Saturday if the explosives from Santa Monica were the ones that killed the deputies. But homicide detectives are probing that possibility. A state official briefed on the incident, who spoke on condition of anonymity because he was not authorized to discuss the investigation, said preliminary information had suggested that the explosion did not stem from a training exercise but from handling explosives that had been seized the previous night.<<