U.S. Rep. Sean Casten’s 17-year-old daughter has died

Suburban U.S. Rep Sean Casten’s 17-year-old daughter died Monday morning at the family’s Downers Grove home, the congressman’s office and Downers Grove police said this evening.

“This morning, congressman Casten’s beloved daughter, Gwen, passed away,” the Casten campaign said in a statement. “The Casten family requests privacy, and we will be issuing no further comment during this heartbreaking time.”

Downers Grove police were called to a house in the block where Casten lives just before 7 a.m. Monday “for an unresponsive seventeen year old female,” according to a Police Department statement. “First responders determined that the subject was deceased.”

Casten is locked in a closely watched primary fight with fellow Democratic U.S. Rep. Marie Newman in the newly redrawn 6th Congressional District that spans from the Southwest Side of Chicago through the south and west suburbs.

This is a developing story. Check back for more details.