JACKSONVILLE, Fla. - The man accused of killing a Chicago Bears fan at the Jacksonville Landing last October pleaded guilty to second degree murder Tuesday morning.

Prosecutors say Matthew Hinson, 28, used a knife to slit the throat of 42-year-old William Pettry after the two got into an argument at Fionn MacCool's Irish Pub and Restaurant.  

Judge Suzanne Bass set Hinson's sentencing for May 28 and Hinson faces 20 years to life in prison.

Witnesses told police Hinson may have been angered after seeing Pettry and a friend talking to Hinson's wife and one of her friends.

Police said Hinson put the bloody knife in his pocket after the incident and walked out of the restaurant.

JACKSONVILLE, Fla. -- San Jose SabreCats defensive coordinator Cedric Walker was arrested and charged with battery after a post game brawl with 68-year-old Jacksonville Sharks general manager Ronald Johnson. 

The fight ended with Johnson being taken to the hospital after Walker slammed Johnson into a wall twice according to the Jacksonville Sheriff's Office. 

The altercation began in the hallway near the locker rooms after an Arena League football game between the SabreCats and Sharks Saturday night.

Two Sharks cheerleaders were exiting their locker room when the SabreCats' owner confronted them about being on the field.

Laura Bouchy, co-owner of the Sharks, intervened and a verbal argument ensued. Due to the argument, several memebers and staff of the Sabrecats exited their locker room and intervened.

According to the arrest report, Johnson entered the argument to protect Bouchy from verbal assaults.

JACKSONVILLE, Fla. -- David Thompson, 43, is a protective father concerned about the impact bullying has had on his 12-year-old son.

"He's always looking behind his shoulders, that's why he hates going to school," said Thompson.

Thompson said he's been trying to get the problem resolved and his family feels trapped by the situation.

"I don't know how to deal with this," he said. 

He has written email after email to the school, Twin Lakes Academy Middle, asking for help.

"My son has been dealing with it for three months and he can't get any resolution," he said.

Thompson, a retired combat engineer, suffers PTSD and in a recent meeting with school officials, after his son was elbowed in the neck, he lost it.

"When it went from verbal to physical I told the cop I want to press charges and I was told 'you can't press charges,'" he said.