HONOLULU -- Police arrested two Honolulu Police Department officers in Las Vegas Saturday night because authorities said the men were using marijuana.

The officers were in Las Vegas for a softball tournament for police officers and firefighters, officials said.

Clark County park police tried to stop the men in a parked van at Desert Breeze Park. Inside the van were two HPD officers Shayne Souza, 47, and Kevin Fujioka, 37.

The HPD officers were parked illegally at the Desert Breeze Park, about 6 miles from the Las Vegas Strip, police said.

As officers approached their van, the van took off, officials said.

There was a short chase before Fujioka and Souza got out of the van and ran from police, officials said. Park officers used pepper spray on Souza when he resisted arrest, they said.

The men face misdemeanor charges of marijuana possession. Fujioka is also charged with driving under the influence of a narcotic. Souza is also charged with resisting a police officer and obstruction of justice.

"Well, the feeling is not a great feeling, but we have to do our job, and that's our job, to make sure that the parks are free of crime to include narcotics," Clark County Police Department Sgt. Rick Binyons said.

In Honolulu, the officers' jobs are on the line.

"More than likely they'll probably get terminated as part of the department's policy on zero tolerance," State of Hawaii Organization of Police Officers President Tenari Maafala said. "It's a heart wrenching situation for all of us -- as a police officer, as a union official, as a father, with my family -- that's who I feel for is the families."

HPD released a statement in regards to the arrests.

"Earlier today, I was informed that two Honolulu officers were arrested in Nevada over the weekend. After contacting the arresting agency, we have determined that the allegations are serious enough to initiate our own investigation. While both were off-duty at the time and not traveling on department business, department policy prohibits illicit drug use by officers whether they are or on- or off-duty. Any officer who uses illegal drugs faces serious consequences, including loss of police powers and termination. If these allegations are true, these individuals should not be police officers, and they should not be supported by their fellow officers or their union," HPD Chief Boisse Correa said in a statement. "The police union has always said that it does not tolerate illegal drug use by its members. I hope that the union leadership will stand by its word in this case and do what is right for the community. According to HPD policy, all officers are randomly tested with certain assignments, such as narcotics investigators, bomb handlers, and recruits, requiring more frequent testing."