Police in Tucson say a man forced a woman at gunpoint to grab her baby from a stroller and walk to a pathway where he sexually assaulted her.

The 2-month-old wasn't hurt but both of the victims were sent to a hospital to be examined.

Police spokesman Daniel Lucas says police got a call around noon Thursday after the woman went on foot to get groceries.

Officers later found the woman, who told police a man had pointed a handgun at her back and forced her to get the baby out of the stroller and head toward a walking path, where he assaulted her.

A school was put on lockdown while officers searched for the man, who is described as Hispanic between 18 and 20 years old, dark-skinned and thin.