MURRAY COUNTY, Okla. -- Authorities in Murray County are searching for a man and a woman who they say carjacked and shot a man, and left him for dead Wednesday alongside Interstate 35.

Authorities say it happened at mile marker 49 in southern Murray County around 2 p.m. 50-year-old Keith Grimes of Gainesville, Texas, was shot in the neck and his pickup truck was stolen.

Grimes did survive. He was taken from the scene by air ambulance to an Oklahoma City hospital, where he underwent surgery and remains Thursday.

An OSBI spokeswoman says the victim was driving a black Dodge pickup truck with Texas license plates when the attack occurred.

She says the pickup was found abandoned about two miles down the
highway from the scene of the attack.

Authorities are looking for a man and a woman in a red and black Ford pickup with Pennsylvania tags headed south on Interstate 35 last seen at mile marker 47.

Authorities don't have descriptions of the pair or know a motive for the assault.

The Associated Press contributed to this report.