<p>Ka Yang, 29, was taken into custody at her home in Sacramento, capital of California, The Los Angeles Times reported.<br /><br />Officials said they were trying to understand what they described as a horrific crime.<br /><br />"We don't know what motivated her to do the crime. We don't really know what led up to it," sergeant Norm Leong of the Sacramento Police Department was quoted as saying.<br />The mother has been charged with homicide, the report said.<br /><br />Investigators have concluded that the baby's burns were not explainable, Leong said. He said detectives sought out forensic experts for advice.<br /><br />"This was definitely unique. Detectives realised they would have to look beyond what they normally do... and found experts who said the injuries appeared to be from a microwave," he said.</p>
<p>Ka Yang, 29, was taken into custody at her home in Sacramento, capital of California, The Los Angeles Times reported.<br /><br />Officials said they were trying to understand what they described as a horrific crime.<br /><br />"We don't know what motivated her to do the crime. We don't really know what led up to it," sergeant Norm Leong of the Sacramento Police Department was quoted as saying.<br />The mother has been charged with homicide, the report said.<br /><br />Investigators have concluded that the baby's burns were not explainable, Leong said. He said detectives sought out forensic experts for advice.<br /><br />"This was definitely unique. Detectives realised they would have to look beyond what they normally do... and found experts who said the injuries appeared to be from a microwave," he said.</p>