Hearing sheds light on how Mar-a-Lago worker implicated Trump and valet

Details on how Yuscil Taveras became a cooperating witness against ex-president and Walt Nauta revealed for first time

When the technology director at Donald Trump's Mar-a-Lago club implicated the former US president and his valet in a scheme to erase subpoenaed security camera footage in the classified documents case, it was the culmination of weeks of talks with prosecutors about an immunity deal.

The employee - identified as Trump Employee 4" in the superseding indictment but named by people familiar with the matter as Yuscil Taveras - became crucial to special counsel prosecutors over several weeks in July after he decided to cooperate with the criminal investigation.