A 22-year-old Oklahoma man is facing multiple serious criminal charges after prosecutors say he violently assaulted a co-worker at a restaurant in northwest Oklahoma City, leaving the victim with a traumatic brain injury and permanent physical damage.
According to information shared by the Oklahoma County District Attorney’s Office, the suspect, Dexter Onan, appeared in court on May 5, 2026, for a preliminary hearing connected to the case.
Serious Injuries Reported After Restaurant Assault
Investigators say the alleged assault happened at a restaurant in northwest Oklahoma City where both the suspect and victim worked together.
Doctors later informed detectives that the victim suffered:
- A severe brain hemorrhage
- A traumatic brain injury
- Permanent scarring after surgery
Medical staff reportedly told investigators that the injuries were extremely serious and required surgery.
Court officials stated the victim is expected to have lasting physical effects because of the attack.
Charges Filed Against Dexter Onan
Although Onan has not been convicted, prosecutors say the court found probable cause that a crime occurred.
He is currently facing three criminal charges:
| Charges Against Dexter Onan | Details |
|---|---|
| Maiming | Serious bodily injury charge |
| Malicious injury or destruction of property | Property-related criminal charge |
| Aggravated assault and battery | Violent assault charge |
The case is still moving through the court system, and Onan remains legally innocent unless proven guilty at trial.
Court Sets Bond at $200,000
Officials confirmed that Onan’s bond has been set at $200,000.
His formal arraignment hearing is scheduled for July 1, 2026.
During an arraignment, defendants are officially informed of the charges against them and may enter pleas in court.
What Is a Preliminary Hearing?
A preliminary hearing is an early court proceeding where prosecutors present enough evidence to show there may be probable cause that the accused committed a crime.
This stage does not determine guilt or innocence.
Instead, the judge decides whether the case should move forward toward trial.
According to prosecutors, the court determined there was enough evidence for the case against Onan to continue.
Traumatic Brain Injuries Can Cause Long-Term Damage
Medical experts consider traumatic brain injuries among the most serious types of physical trauma.
Possible long-term effects may include:
- Memory problems
- Speech difficulties
- Emotional changes
- Permanent scarring
- Cognitive impairment
The extent of the victim’s long-term recovery has not been publicly disclosed.
Case Draws Attention Online
The Oklahoma County District Attorney’s Office shared details about the case on Facebook, bringing additional public attention to the alleged assault.
Social media users reacted strongly to the reported injuries and the seriousness of the charges.
However, legal officials continue reminding the public that the suspect has not yet been found guilty.
Investigation and Court Process Continue
Authorities have not yet released full details about what may have led to the alleged attack between the co-workers.
As the legal process moves forward, prosecutors and defense attorneys are expected to continue presenting evidence and witness testimony before trial proceedings begin.
The case involving Dexter Onan has attracted attention because of the severe injuries reportedly suffered by the victim during the alleged workplace assault. Prosecutors say the attack caused permanent physical harm and traumatic brain injuries serious enough to require surgery.
While the court has found probable cause for the charges to move forward, Onan has not been convicted and remains innocent unless proven guilty. The case will continue through the Oklahoma court system with a formal arraignment scheduled later this year.
