Elon Musk's private security detail deputized by U.S. Marshals Service, sources say

Members of Elon Musk's private security detail have been deputized by the U.S. Marshals Service, granting them certain rights and protections of federal law enforcement agents, four sources familiar with the move confirmed to CBS News Thursday.

The move comes after several people within Musk's orbit relayed a heightened concern about safety for the tech billionaire, including several death threats in recent weeks. 

The Tesla CEO turned Trump adviser referenced that concern while on stage at a conservative gathering outside Washington, D.C., on Thursday.