ALBUQUERQUE, N.M. (AP) — In the nearly 15 years since New Mexico was rocked by one of the worst cases of child abuse the state had ever seen, no shortage of children have shared fates similar to Baby Brianna.

And despite reforms of the state's child welfare system, New Mexico Attorney General Hector Balderas says there still are unacceptable gaps that need to be addressed.

Balderas raised his concerns in a letter sent this week to Sen. Michael Padilla, an Albuquerque Democrat who's asking for a review in the wake of the latest deadly case — the slaying of 10-year-old Victoria Martens.

Children, Youth and Families Secretary Monique Jacobson said Wednesday that many reforms have been put in place over the last 18 months and the department's mission depends on continuously looking for ways to improve the system.