A search warrant made public Monday shows that Hemet police discovered the weapons and an empty gas canister at the home of Jose Campos on Nov. 18.
Campos, Adrian Rios and Felicia Sharp, all 17, were reported missing earlier this month. Sharp was found safe on Wednesday.
Authorities are trying to determine if the remains belong to Campos or Rios.
Police have not released any information from a two-hour interview with Sharp.
So far, there are no suspects, as police continue the investigation into the two missing teens.
