David Miscavige P.I. Says David Blocked Medical Help If Dad Dies, He Dies

4/9/2015 4:20 PM PDT

David Miscavige -- P.I. Says Scientology Leader Block Medical Help ... If Dad Dies, He Dies

EXCLUSIVE

Chilling audio ... the father of Scientology leader David Miscavige appeared to be having a heart attack, and his son ordered his people to stand clear and just let him die ... so claims the P.I. who was tailing David's dad.

P.I. Daniel Powell recounted during a police interview in 2013 how he and his dad were following Ronald Miscavige, who left the church, when Ronald suddenly slumped over and appeared to be having a coronary.

Powell says his dad, Dwayne, called the people who hired him on behalf of Scientology and informed them of the situation. He says a short time later David called Dwayne and instructed him not to render aid ... if he died, he died.

We're told it ended up just being a case of the cramps.

David Miscavige's lawyer denies his client hired the P.I.s or even knew them.  

Daniel Powell and his dad say they were paid $10k a week to follow Ronald for a year-and-a-half.