Two churchgoers have been killed and a state trooper seriously wounded in two shootouts during a gunman’s rampage.

A morning of terror began when the shooter opened fire outside Blue Grass Airport in Lexington, Kentucky, about 10.40am on Sunday.

The trooper was shot when he pulled over the gunman on Terminal Drive after the car was pinged by a license plate reader on a nearby traffic camera.

The shooter then carjacked another vehicle and fled 16 miles to Richmond Road Baptist Church, where he was cornered by pursuing cops, police said.

Lexington Police Chief Lawrence Weathers said the gunman, who may have a connection to the congregation, fired on worshippers inside the Baptist church.