The San Diego County Sheriff’s Department on Thursday identified the person they believe to be responsible for stabbing a Cal Fire captain to death in her Ramona home earlier this week.

Yolanda Marodi, who is suspected in the slaying of her wife, a Cal Fire captain, pleaded guilty in 2004 to voluntary manslaughter in the fatal stabbing of her then-husband.

Rebecca Marodi, a Cal Fire captain stationed in Riverside County, was found stabbed to death inside of her own home in Ramona on Monday evening, authorities said.