NEW : The cause of the accident is under investigation , the police say . John Threlkeld died in a car crash in Buffalo , New York , police say . CNN 's Leigh Remizowski contributed to this report . Threlkeld was a veteran newsman who worked for CBS for 25 years .
NEW : The cause of the accident is under investigation , the police say . John Threlkeld died in a car crash in Buffalo , New York , police say . Threlkeld was a veteran newsman who worked for CBS for 25 years .