Man pleads guilty to attacking Rep. Angie Craig in DC apartment building

The man who attacked US Rep. Angie Craig in her Washington, DC, apartment earlier this year pleaded guilty Thursday to assaulting the Minnesota Democrat and two metro police officers who attempted to arrest him after the incident.

Kendrid Hamlin, who has a lengthy criminal history in DC, plead guilty in federal court to each of the three counts he faced, including assaulting a member of Congress and two counts of assaulting law enforcement.

A sentencing hearing for Hamlin is set for September. He faces up to 10 years in prison for the assault on Craig and up to six months in prison for each of the police assaults.

According to his attorney, Hamlin suffers from mental illness and homelessness.

Craig's office declined CNN's request for comment.

On the morning of February 9, Craig noticed Hamlin walking around inside the lobby of her apartment building, according to court documents. After Craig entered an elevator, swiped her building access card and selected a floor, Hamlin stopped the elevator from closing by sticking his hand through the door, court documents said.

Hamlin told Craig he needed to come to her apartment to use the restroom and, after Craig told him no, Hamlin "stood in front of the elevator door, blocking the Representative from exiting the elevator, and hit buttons on the keypad."