SHELBYVILLE, Tenn. (AP) -- A Middle Tennessee man will spend the next 27 years in prison for killing his infant son for disturbing his video game.

Nineteen-year-old Andrew Keith Johnston of Normandy entered a best interest plea to charges of second-degree murder for the death last October of his 1-month-old son.

The Shelbyville Times-Gazette quoted Assistant District Attorney Mike Randles as saying Johnston gave a written statement saying he became irritated when the infant was crying in his bassinet, interfering with his playing of video games. The prosecutor quoted him as saying he squeezed the boy hard and shook him.

Johnston reached a plea agreement in circuit court.