FORT COLLINS, Colo. (CBS4)– A block party in the Summerhill neighborhood that turned into a riot back in April has resulted in 15 people being charged.

Police in Fort Collins have wrapped up their investigation into the April 27 party that deteriorated into riotous conditions.

The parties were shut down after police were called to the neighborhood when residents complained about large crowds gathering in the street.

Police dispersed the partygoers who initially complied with the officers’ requests until the music was shut off. That’s when the crowd became unruly and aggressive. They started breaking bottles, climbing on streetlight poles, cars, trees and throwing bottles at police.

Police were forced to release pepper spray and tear gas to break up the crowd.

Detectives believe the majority of partygoers did not cause problems but contributed to the situation by not obeying orders by officers.

Two people were charged with inciting a riot including Kyle Stephen Griffin, 20, from Wellington and Kodi Don Noel, 24.

Two have been charged with engaging in a riot including Cameron Walker Isaacks, 23, and Joseph Daniel Steinkirchner, 22.

One person has been charged with disorderly conduct including Houwer (Mike) Omar Argueta-Garcia, 20, from Carbondale.

PHOTO GALLERY: See More Images From The Street Party

Eight people who hosted three of the parties have been charged with nuisance gatherings which includes a fine of up to $1,000 and allows the city to recover any costs incurred as a result of the incident.

Those people include Jared Charles Doll, 22, Ethan Leslie Lewinskas-Hodgson, 23, Jeremy Brian Smith, 22, Michael Aaron King, 23, Andrew Ellipsis Simmons, 25, Tyler Michael Loendorf, 21, Zachary Alan Vonthun, 21 and Dane Elliot Shore, 21.

Two people have been charged with unreasonable noise including Kapri Lashaw Bibbs, 20, and Evan Louis Edwards, 21, from Meeker.

Three people were hurt in the melee.