A warrant has been issued for a woman in connection to the disappearance of two girls from southern Alberta.

RCMP say the two girls, ages six and 12, were picked up at their school in the hamlet of Brant near Vulcan Monday morning.

Officials are looking for their biological mother.

RCMP say it was a parental abduction, as she does not have legal guardianship of the children.

Their 48-year-old mother was believed to be driving a 2007 black Honda CRV with Alberta licence plate of ORNRSE.

Police say they don't believe the girls are in immediate danger, but think they may have been taken to Vancouver Island.