The woman whose voice was heard in rubble of Surfside condo collapse has been identified. This is how it happened

The faint and calm voice of a woman trapped in the hulking pile of concrete and twisted steel could be heard for several hours after the collapse of the Surfside, Florida, condominium last June.

"Eventually we didn't hear her voice anymore," Miami-Dade County Fire Chief Alan Cominsky said one week after the June 24 collapse.

An 11-page memo released publicly by the Miami-Dade Fire Rescue Department last week said the "voice in the rubble" belonged to Theresa Velasquez, a Live Nation music executive who was 36 when she perished, along with her parents.