The first murder of 2012 in Corpus Christi is halfway to being resolved. It was revealed on Tuesday that one of the two teens charged in the brutal death of an elderly woman has pled guilty.

It was back on Jan. 13 when the victim, Christina Arades Naranjo, was attacked in her home on the 200 block of Tancahua. Police said two 15-year old boys attacked and robbed Naranjo, and she was stabbed several times.

The district attorney at that time said he would ask that the boys be certified to stand trial as adults, but attorneys for both boys filed motions to fight that certification.

One teen has agreed to plea out as a juvenile, and was sentenced to 40 years in prison, three of which he'll spend in the Texas Youth Commission before going to adult prison.

The second teen will go to trial for the murder, and if found guilty, could get up to 40 years in prison.