Joseph Mbatchou

Booking photo of Joseph Mbatchou (Chicago police)

A former Uptown neighborhood man who attacked a woman in a public restroom in a park near the Foster Avenue beach in 2010 pleaded guilty and was sentenced today to 20 years for the attempted sexual assault, authorities said.

Joseph Mbatchou pleaded guilty to one count of attempted aggravated criminal sexual assault and he was sentenced to 20 years by Judge Joseph G. Kazmierski, according to Cook County State’s Attorney’s office spokeswoman Tandra Simonton.

Mbatchou lived in the 900 block of West Lawrence Avenue in September, 2010, when the attack occurred.

A woman told police that Mbatchou, who was 29 at the time, came into the restroom at 5100 N. Simonds Drive in Margate Park the afternoon of Tuesday, Sept.  21, 2010, struck her in the face and attempted to sexually assault her, police said at the time.

Witnesses told police they heard screams from the restroom and a man rushed in and broke up the attack. The attacker scuffled with the man who rushed in, hit him in the face, then calmly walked out of the restroom, the witnesses said.

"Like nothing happened," one witness told the Tribune at the time. The attacker said, "That's OK, I'm with the FBI," and walked away.

As he casually walked south on the beach, a man on a bike followed the attacker and pointed him out to police, the witness said.

The woman who was attacked was bleeding from the forehead as paramedics took her out of the restroom, the witness said.

Mbatchou was convicted of residential burglary in 2007 and was sentenced to four years in prison. He was released from the Dixon Correctional Center in July of 2008 and was discharged from parole in July 2010, according to the Illinois Department of Corrections.

rsobol@tribune.com