Posted: 6:15 p.m.
Three people are behind bars in connection with the June 9 fight along the Colorado River that injured five people, including one critically.
The fight was recorded by a witness' cell phone video.
But now, the victim of the stabbing is actually a suspect in the incident, according to deputies.
In the video that captured the fight, a man is seen firing a shotgun.
He is also the man who was stabbed, deputies said.
Now, Benjamin Castro, 21, is facing charges of attempted murder in the second degree and aggravated assault.
"Our detectives found that Benjamin Castro, that's shown on the video holding the shotgun, was the subject that was stabbed and taken to YRMC," said Alfonso Zavala with the Yuma County Sheriff's Office.
The video, sent to News 11 by a witness, shows, who deputies believe to be Benjamin Castro, firing the shotgun.
"It was an argument between the two groups that had been occurring throughout the afternoon, which led to Mr. Castro retrieving the shotgun and firing rounds into the group of people," Zavala said.
Deputies also arrested Castro's brother, 24-year-old Sergio Castro and 21-year-old Iris Silva for hindering prosecution.
Benjamin Castro was originally thought to have been a victim, but witnesses tell deputies otherwise.
"People [have been] coming out and calling us, and the videos [show] another side of what actually occurred that day," Zavala said.
Two other men who were wanted for questioning have been in contact with deputies. They are Matthew Jimenez, 26, and Jesse Ramirez, 25. They have been released pending further investigation.
The Castro brothers and Silva are expected in court later this week.