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 was found in her San Diego-area home Monday. A woman has been identified as a suspect in her slaying, but her whereabouts are unknown.

A suspect in the fatal stabbing of a Cal Fire captain in San Diego County was identified Thursday by law enforcement officials, who confirmed she was married to the captain and had previously served time in prison in connection with another killing.

Investigators are seeking 53-year-old Yolanda Marodi, also known as Yolanda Olejniczak, in connection with the killing of Cal Fire Capt. Rebecca Marodi, 49.

Rebecca's wife, Yolanda Marodi—also known as Yolanda Olejniczak— was also a veteran firefighter with Cal Fire, having served more than 30 years in the department. Despite her being widely respected by colleagues, Yolanda has been named the primary suspect, according to the San Diego County Sheriff's Office.

Deputies from the San Diego Sheriff's Office responded to a radio call about an assault with a deadly weapon in the 20200 block of Rancho Villa Road in Ramona around 9 p.m., the sheriff's office said in a press release.

Authorities are searching for Yolanda Marodi in connection to the brutal stabbing death of her wife, Cal Fire Captain Rebecca Marodi.