Authorities say good Samaritan with a gun thwarts attack on a police officer in Utah

Derek Meyer, right, confronted Paul Douglas Anderson, left, in Utah. Photos / Springville police, Fox 13

Authorities say a good Samaritan with a handgun thwarted a savage attack on a police officer in Utah.

The good Samaritan in question is Derek Meyer, who told Salt Lake City Fox-affiliate KSTU-TV that he was driving on Main St in Springville, which is about 80km from Salt Lake City, when he spotted police lights - and a man walloping a police officer.

An officer on patrol had seen a pair of feet dangling out of a bin for Tabitha's Way, a local food pantry that hosts a clothing recycling programme.

The feet belonged to a man police identified as Paul Douglas Anderson, who climbed out of the bin but refused to take his hands out of his pockets.

When Anderson finally took his hands out of his pocket, he balled them into fists and struck the officer repeatedly, according to police. The attack fractured the officer's eye socket and left him with a scratch near his eye, police said.

That's about the time Meyer saw the scuffle.

"I carry a gun to protect me and those around me, but primarily I carry a gun to protect my family first and foremost," Meyer told KSTU. Police said Meyer had a permit to carry a concealed weapon. "Outside of that, if I were to use my gun to protect anyone it would be law enforcement or military personnel."

He hit a U-turn and got out of his car with his gun. He aimed at the man assaulting the officer and ordered him to stop.

Anderson stopped attacking and sprinted away, police said.

Officers from several nearby agencies were called in to help search for Anderson, and a nearby school was placed on lockdown. After half an hour, officers found the suspect hiding beneath a flatbed trailer.

He was taken to jail and charged with assault on a police officer, resisting arrest, theft, burglary and failure to stop at the command of a police officer. Police have not identified the officer involved, who was treated at a hospital and released.

Police said Meyer's actions stopped the officer from being more grievously injured - or having to use deadly force.

"Had he not been in the right place at the right time, who knows what would have happened?" Springville Police Corporal Cory Waters told the news station. "But he definitely stopped the attack from continuing and becoming much worse. He might have even saved either one of their lives. It could have gone really bad, even for the suspect."

Good Samaritan Derek Meyer jumped to the rescue of a Utah Officer under attack. Lawfully armed citizen protecting the law. @FoxNews https://t.co/dggZwp0ok9

— Sheriff Paul Babeu (@PaulBabeuAZ) February 4, 2018

STEPPING UP

Good Samaritan situations can be unpredictable and do not always go so well for the people intervening, even when the person trying to render aid is an officer and trained.

- In 2016 a Texas man named Isidro Zarate was shot and killed in a Walmart parking lot after he told a man beating his girlfriend "take your hands off her". The man, whom police identified as Teles Mandan Juarez, reached for a secreted gun and shot Zarate in the neck with it.

- A few months later, a teenage EMT-in-training trying to help a woman who had been shot by her boyfriend was shot and seriously injured by the boyfriend after he returned to the scene. "If you help her, I'm going to kill you," the man said, according to the teen.

- And last June, a black off-duty police officer in St Louis was shot while coming to the aid of other officers who had exchanged gunfire with teenagers in a stolen car. The shooters: his fellow officers, who didn't recognise he was a policeman.