A Vermont man has been convicted on charges following a fracas that erupted when his family was told they couldn't carry knives into a New Hampshire amusement park.

The Perry family tried to enter Canobie (KA'-noh-bee) Lake Park in Salem last June. Police said they became belligerent and yelled profanities when two officers responded.

After several warnings, an officer told one of Perry's sons he was under arrest and tried to handcuff him, leading to a melee that injured two officers.

On Wednesday, 46-year-old E. Alan Perry of Lyndon was found guilty of inciting riot, criminal trespass, disorderly conduct and resisting arrest. He was found not guilty of assault.

Two sons, Joshua and Brian Perry, have been indicted by a grand jury. Another son and daughter were fined.