Walker, 53, was reported missing after he went hiking early on the morning of July 15 along the Clamshell trail in Monrovia.
An extensive search effort was launched but the remains of the South Pasadena man were not discovered in the area until July 26.
No foul play was suspected, although the coroner's office for now has deferred determining the cause of death.
The video in the player above is from a previous report on this subject.
Rescue crews battle triple-digit heat in search for missing hiker
Rescue crews battle triple-digit heat in search for hiker who went missing 1 week ago in Monrovia