Rep. Sean Casten's 17-year-old daughter Gwen dies

Illinois Congressman Sean Casten announced Monday evening that his 17-year-old daughter, Gwen, has died, CBS Chicago reports.

"The Casten family requests privacy, and we will be issuing no further comment during this heartbreaking time," Casten's office said in an email.

Shortly before Casten's congressional office announced his daughter's death, Casten's campaign asked all Illinois TV stations to immediately pull his campaign spots off the air until further notice.