Cory Killgore, who was serving with an artillery unit in Afghanistan's Helmand Province, they said.

CNN: Investigators find body of Marine's missing wife

The San Diego County Sheriff's Department said Perez is being "actively investigated" in connection with Killgore's death.

CNN: Investigators find body of Marine's missing wife

Investigators later found Killgore's body in a rural part of neighboring Riverside County.

CNN: Investigators find body of Marine's missing wife

Lopez was briefly hospitalized with lacerations, then jailed on suspicion of Killgore's murder.

CNN: Investigators find body of Marine's missing wife

Killgore had recently filed for divorce from her husband, Marine Lance Cpl.

CNN: Investigators find body of Marine's missing wife

Killgore, 22, was last seen alive Friday night when she left her apartment wearing an evening dress, heading out on a date with 45-year-old Marine Staff Sgt.

CNN: Investigators find body of Marine's missing wife

One is Perez, who was questioned after a friend filed a missing persons report for Killgore, then later arrested on charges of possession of a stolen assault rifle.

CNN: Investigators find body of Marine's missing wife

Her relationship to Killgore is still unclear.

CNN: Investigators find body of Marine's missing wife