Westland Police said two pit bulls attacked a woman around 9:30 p.m. Sunday night.
The seriousness of the woman's injuries or her identity have not been released.
Witnesses said that the woman attacked was five months pregnant.
Witnesses also said the woman's arm was badly mauled.
Police confirmed that they shot and killed one pit bull and other ran way.
Local 4 will update this story as more information is made available.