Police arrested a 21-year-old man Tuesday after he allegedly fired a 9-mm handgun and threatened some people in Wahiawa. 

The incident began about 10:45 a.m. when the victims confronted the gunman about a burglary Monday night. 

During the argument, the two other people came and gave the 21-year-old man a 9-mm handgun to protect himself, police said. 

The 21-year-old man allegedly fired the gun into the air and threatened four victims. 

Officers arrested the 21-year-old for investigation of reckless endangering, a firearm offense, terroristic threatening, and detaining stolen property.  

The two people who showed up were also arrested for various offenses, police said. No one was hurt.