A Rowley police officer was treated for minor injuries after a crash on Haverhill Street this morning, police said. Officer Matthew Ziev, 31, was responding just after 11 a.m. to a report that a 3-year-old child had stopped breathing. While heading east on Haverhill Street, police said, Ziev’s cruiser collided with a Chevrolet Suburban traveling west driven by a 48-year-old Rowley woman. Ziev, a six-year veteran of the Rowley police, was extricated from the cruiser and transported to Beth Israel Deaconess Medical Center by helicopter. The other driver was taken by ambulance to the Anna Jaques Hospital in Newburyport. Both were treated and released, police said.