Diane Sawyer interviewing Amanda Knox for April show

Diane Sawyer interviewing Amanda Knox for April show
Amanda Knox speaks at a news conference shortly after her arrival at Seattle-Tacoma International Airport Tuesday, Oct. 4, 2011, in Seattle. Her father, Curt Knox, stands behind her.
NEW YORK (AP) - Amanda Knox, the college junior who spent four years in an Italian prison after being accused of murdering her British roommate, is telling her story to ABC News.

The network says Knox will sit down with Diane Sawyer for a prime-time special airing April 30. The exclusive interview also will be featured on other ABC News programming.

Knox was an American student studying in Italy when, in 2007, she became the center of a murder case that seized the world's attention. She was convicted in 2009. But after an appeal, she was acquitted and released in October 2011.

The interview is timed to the publication of Knox's book, "Waiting to Be Heard."