BALTIMORE â€"  DEVELOPING:  Baltimore police say a mother has stabbed her infant child in the neck at a social services building.

The 8-week-old baby is critically injured at a hospital and the mother is in custody.

Police spokesman Anthony Guglielmi said the stabbing occurred just before 10 a.m. Tuesday at a Department of Social Services building.

The baby's gender was not immediately known.

Detectives and child abuse investigators are continuing to investigate.