Call the insurance carrier and notify of them of the deceased.
You must be a relative or a beneficiary or they won't talk to you.
You generally have to talk a claims person and start the claim.
You'll need, death certificate, will and any documents pertaining to the death, benefits, changes to policy.
Claims/Benefits Adjusters/Handlers will walk the familiy/beneficiary through everything and go over details of payout.
Adjusters can use their own judgement on who to investigate, usually if someone comes in unprepared or seems too nervous. If it takes too long to provide proof of death.
-If a Red Flag goes up.
They're going to go with Autopsy, Coroner's Report, Police Reports, ANYTHING they can possibly find they probably will, Inusrance Investigators are usually ex-FBI or Police Detectives or Ex-Coroners with PhDs and they're good at their job.
If the policy was for a lot of money they'll investigate no matter what, a lot being 1,000,000$ or over payout, they'll investigate like hell and even have Insurance Investigators staking out the funeral.
-per my girlfriend who is an insurance agent.