Downtown area

Huntington Beach police are asking the public's help to identify these two good Samaritans who were reportedly assaulted during the U.S. Open of Surfing disturbance. (Courtesy of Huntington Beach Police Department / August 1, 2013)

Huntington Beach police arrested a second suspect linked to the U.S. Open of Surfing disturbance through the means of social media, according to a Huntington Beach police statement.

The 15-year-old Huntington Beach boy, whose identity is not being release, was booked into Orange County Juvenile Hall Thursday on suspicion of assault on a peace officer, vandalism, inciting a riot and refusing to disperse when ordered, according to authorities.

The teen reportedly threw glass bottles at officers on Main Street and tipped over a portable restroom, authorities said.

There are now nine suspects arrested in connection with the disturbance in downtown Huntington Beach.

Illario Niko Johnson, 18, of Chino, who was the first suspect identified through social media, pleaded not guilty Thursday to charges of arson, inciting a riot, participating in an unlawful assembly and refusing to disperse when ordered, according to a court official. His bail is set at $20,000 and a pre-trial hearing is scheduled Aug. 9.

Huntington Beach police also asked for the public's help to identify two men seen in separate photographs that were victims in the U.S. Open of Surfing disturbance on July 28, according to a Facebook post from the department.

According to authorities, the two good Samaritans were assaulted by suspects during the melee.

Authorities would like to talk with the two men to help identify the suspects.

Huntington Beach police are still looking for additional suspects.

Anyone with information is asked to email hbpdfiles@gmail.com or call the police hotline at (714) 375-5066.

— Anthony Clark Carpio

Twitter: @acocarpio

[For the record, 5 p.m. Aug. 6: An earlier version of this story incorrectly reported that the teen was the 10th suspect arrested. He was the ninth.]