A 14-year-old boy is the latest suspect found with a weapon in Boston, with police arresting the gun-toting teen at a Dorchester playground in what one top gang expert says is a “frightening” find.

Boston Police report they have confiscated 550 guns this year — the latest at the Trotter School Playground on Friday night. The teen is accused of carrying a SCCY CPX-1 semiautomatic pistol, loaded with four rounds of live ammunition.

“It’s great that that gun was taken off the street and out of the hand of that young teenager,” said Emmett Folgert, executive director of the Dorchester Youth Collaborative. “It’s tragic when anybody that young is carrying a gun.”

But Folgert added: “Nothing good is going to happen from it, it just changes everything and is frightening.”

Folgert, who runs the community-based agency that serves high- and proven-risk teens in Dorchester, said he spoke with multiple kids in the program about how a 14-year-old could get his hands on a gun and was told that it often happens if the teenager is in a gang or if an older kid gives him one so that older kid doesn’t get caught with it.

The youth is facing multiple charges — including unlawful possession of a firearm, carrying a loaded firearm and unlawful possession of ammunition — after officers arrested him at the playground at 6:45 p.m., police said.

Officers from the city’s Youth Violence Strike Force made the arrest after observing and approaching a “large group” smoking at the playground, Boston Police said.

While speaking with three boys, the officers observed one start to suddenly “breathe excessively and leaning forward, as if to conceal something inside of the front pocket of his sweatshirt,” according to a BPD release.

Fearing the boy was carrying a weapon, the officers asked him to stand up so they could try to identify the item, at which point the boy attempted to flee, police said.

After immediately being apprehended, the officers found the loaded pistol in the boy’s waistband. He was taken into custody, according to the release.

The teenager is a Dorchester resident and is expected to be arraigned in Roxbury District Court on Monday.

A parent with her child at the playground Saturday said the arrest has her worried.

“It’s scary, because anything could have happened. What if it happened during the time I’m here right now?” said Tyrean Dykes, who brought her daughter to the playground. “My daughter’s only 7 and she’s so innocent. She wouldn’t know what to do if somebody ever brought a gun to the playground.”

So far this year, Boston Police have confiscated 550 guns and have confiscated approximately 3,600 guns since 2015, according to BPD Officer James Kenneally. Over the past four years, Boston Police officers have confiscated an average of 762 guns annually.