HAYWARD — A man pushing a 3-month old infant in a stroller was fatally shot Wednesday afternoon in unincorporated Hayward, Alameda County sheriff’s officials said.

The infant was not hurt. Authorities did not say if the child was a boy or girl or what the relationship between the child and victim was.

The man’s name and age have not been released.

The shooting happened about 3 p.m. Wednesday in the 200 block of Willow Avenue.

The man was pronounced dead at the scene and no one else was injured, Sheriff’s Sgt. Ray Kelly said.

Kelly said it was too early to determine a motive. No arrests have been made.

Investigators were at the scene and streets in the area have been blocked off.

Kelly asked that anyone who witnessed the shooting or who might have video surveillance to contact the sheriff’s office at 510-667-7721. Callers can remain anonymous.

Check back for updates.