A woman suspected of killing her wife, a Cal Fire captain, was sentenced in 2004 to 11 years in prison for fatally stabbing her then-husband, sources say.

Detectives with the San Diego Sheriff's Department "are treating this case as a potential domestic violence incident," officials said

Authorities have identified the suspect in the fatal stabbing of the California fire captain who helped battle the Eaton wildfires in Los Angeles as her wife, with officials noting this was not her first murder.