Breaking: Congresswoman Gabrielle Giffords to Step Down This Week

Rep. Gabrielle Giffords (D-Ariz.) announced on her facebook page Sunday that she will resign from Congress this upcoming week. On January 8, 2010, Giffords was shot in the head in a Tucson grocery store parking lot while meeting with constituents. Six people were killed and 13 others, including Giffords, were wounded. The man charged in the shooting, Jared Lee Loughner, has pleaded not guilty to 49 charges.

According to officials in Washington, her resignation is expected to take effect on Monday.

Giffords returned to Congress in August of last year to cheers from her colleagues.

The Associated Press contributed to this report.