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CALIFORNIA – A woman is accused of attacking a third-grade girl with a hammer in an elementary school bathroom in Oakland, California.

Officials say they arrested Haseemah Diame, a parent and volunteer at Lafayette Elementary school.

A district spokesman says Diame, the mother of a student at the school, was a frequent visitor on campus who was recognizable to both students and staff.

She is expected to face assault with a deadly weapon charges.

The attack was discovered when a teacher and school security guard checked the bathroom for the student.

Diame was detained at the scene and arrested by police.

The girl had serious injuries and was hospitalized, but was conscious after the attack and is expected to recover.

The district spokesman said information on the motive for the attack remains “speculative.”

But he said it appears it may be the result of a feud between families at the school.