Of the 170 people arrested in the May biker shooting incident outside a Waco restaurant, only a few remain under ankle monitoring, while none of them are in jail.

After their lawyers reached an agreement with prosecutors to modify the conditions of their pre-trial release, only 22 of the 135 people who were ordered to GPS ankle monitors still do, according to the Waco Tribune-Herald.

In addition, after the 170 bikers were locked up for their connection with the May 17 shooting incident outside Twin Peaks restaurant, McLennan County prosecutors failed to charge any of them with the shooting deaths of nine people and injuring of 20 others. Instead, those arrested were charged with engaging in organized criminal activity.

None of the bikers who were forced to wear to GPS monitors committed serious violations leading to their returning to jail, according to ABC News.

McLennan County prosecutors failed to return messages seeking comment. However defense attorneys familiar with the case suggested the district attorney's office eventually plans to dismiss against some defendants.

"We are starting the letting go process, although they are not admitting they did something wrong," said attorney Adam Reposa of Austin, reported the Associated Press.

The shootout allegedly erupted in the restaurant parking lot following a confrontation between two rival gangs.

However, while investigators have yet to offer details about who shot who, or if police were responsible for the fatal shooting, preliminary reports indicate that at least one biker was hit by police bullets.