GRAND TERRACE (CBSLA.com) —  Two Colton men are in custody for allegedly beating a partygoer with brass knuckles and leaving the victim severely injured.

Just after 3:35 a.m. Sunday, deputies with the city of Grand Terrace, the city of Loma Linda and the central station, were called to the 12400 block of Willet Avenue in Grand Terrace about a report of a fight of more than 15 people fighting in the street.

READ MORE: Caught On Camera: Hancock Park Woman Robbed After Returning Home With Baby

Upon arrival, deputies said they located several bloodied subjects still in the roadway. After the arrival of additional deputies, the scene was secured and fire paramedics responded to treat the injured.

Investigating deputies said a party at the location got out-of-hand with many guests becoming intoxicated.

Two suspects, later identified as George Guitron, 21, and Ruben Guitron, 20, allegedly followed the victim outside to the street where both began punching him. They allegedly knocked him to the ground and continued the assault. While on the ground, the victim attempted to defend himself. During the assault, the victim was allegedly struck on the head with brass knuckles multiple times.

Deputies said Ruben Guitron had a pair of brass knuckles when they arrived.

READ MORE: Sheriff's Homicide Unit Investigating Fatal Shooting In Whittier

The victim sustained open and bloodied wounds to his head, face and neck area.

While detaining the suspects and treating the injured, officials located several blood  trails on the property and the street. They said one such trail led to an open pocket knife which appeared to have blood on the blade. Deputies also located and secured a handgun from within the residence.

Ruben and George Guitron were arrested and booked at Central Detention Center for felony assault with a deadly weapon causing serious injury.

During the investigation, deputies were told that several other subjects had been involved in the fight but had fled the area just prior to their arrival`. It is unknown if any of the subjects that left location had sustained any injuries as a result of the fight, officials said.

Deputies are seeking information regarding the identity of anyone injured/involved in this incident.

MORE NEWS: In-N-Out Burger Appears Defiant As Enforcement Of LA's Proof Of Vaccination Requirement For Indoor Dining Begins

Anyone with information regarding this investigation is urged to contact the San Bernardino County Sheriff’s Department Central Station. Callers wishing to remain anonymous are urged to call the We-tip Hotline at 1-800-78-CRIME (27463) or you may leave information on the We-Tip Hotline at http://www.wetip.com.