Officials said five bodies --three men and two women-- have been recovered on the property owned by Jesus Guillen and Maria Lopez -- the missing couple.
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Autopsies are pending, but authorities said all five victims died violently.
MORE: 5th body found on Tijuana property owned by missing Garden Grove couple believed dead
5th body found on Tijuana property owned by missing Garden Grove couple believed dead
The suspect in the case is the couple's son-in-law -- identified only as Santiago -- who was deported from the United States in 2012.
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Detectives said Santiago's psychology report found he was addicted to methamphetamine.