HOUSTON -

An elderly woman has been charged in a 23-year-old murder case.

Houston police said Gregorio Cardoza, 36, was shot and killed in his home in the 7100 block of Hillcroft on the morning of February 23, 1990. Officials said he was shot in the head.

Investigators identified Cardoza’s live-in girlfriend, 63-year-old Rosa San Miguel Aguilar, as the suspect in the case. But soon after the murder, she fled to Peru.

Houston police said on December 12, 2012, Aguilar was taken into custody in Peru by members of the United States Marshal's Office. She was returned to Houston on Wednesday, June 19 and admitted to HPD homicide investigators her role in Cardoza's death. 

Aguilar is charged with murder.