Police in Wisconsin said a woman celebrated her birthday by helping her teenage son rob two gas stations.

Officers in the Milwaukee suburb of Greenfield said the 37-year-old woman acted as the getaway driver while her 17-year-old son robbed the stations at gunpoint.

Authorities said the pair were in custody Wednesday awaiting charges. Their names were not released.

Police said the teen was visiting from Chicago for his mother's birthday.

And they said the woman's 13-month-old daughter and two boys ages 10 and 14 rode along during the robberies in Greenfield and Milwaukee. Greenfield police Deputy Inspector Bradley Wentlandt said the younger children have been turned over to child welfare.