CLAYSVILLE, Pa.—Police in western Pennsylvania say a head-on crash between two sport utility vehicles on Christmas night killed both drivers and injured two other people, including an 8-month-old baby.

State police in Washington County say one SUV heading north on Route 128 in Morris Township crossed the center line and collided with a southbound SUV at about 6:40 p.m. Wednesday.

Police say 46-year-old Shari Cox of Prosperity was pronounced dead at the scene and 28-year-old Stephen Breese of Washington, Pa. died at Washington County Hospital.

A 30-year-old woman was flown to UPMC Presbyterian and the 8-month-old baby was flown to Children's Hospital. Both were passengers in Breese's SUV. Their conditions weren't immediately available.