JENSEN BEACH — A well-known mathematical theory states that a group of monkeys randomly typing on a typewriter could eventually write the complete works of William Shakespeare by pure chance.

But Martin County Sheriff’s investigators said there is no chance that one cat could randomly type words on a computer keyboard to download child pornography 1,000 times.

Keith Griffin

But that’s the excuse that 48-year-old Keith Griffin, of Jensen Beach, gave after investigators found 1,000 images of child pornography on his computer, detectives say. Griffin was arrested today on 10 counts of possession of child pornography.

According to a sheriff’s report, detectives conducting online investigations in July discovered that Griffin was downloading pictures of children as young as 8 years old having sex from file-sharing programs.

When deputies searched Griffin’s home and talked to him, he told detectives that he would leave the room sometimes while downloading music and when he returned, his cat had jumped up on the keyboard and strange images were downloaded.

Griffin is being held in the Martin County Jail on $250,000 bail. The cat was not charged with any crimes and is being cared for by a family friend, according to sheriff’s officials.