The families of the 16 victims killed in the devastating blast at a Tennessee explosives plant have been notified.

No one has been found alive in the search and investigators are working through the scene metre by metre, Humphreys County Sheriff Chris Davis said.

Earlier, officials thought 18 people were missing because their vehicles and personal items were at the facility, but they were later able to locate two people off-site, officials said.

"We're moving to recovery," Davis said with emotion during a news conference one day after the blast, his voice trailing off at times.

"At this time, we have recovered no survivors."

"As we get into this, we find it even more devastating than what we thought initially," he added.

Early on Friday, the thundering blast at Accurate Energetic Sys

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