A ShotSpotter alert near 719 Washington Street in Dorchester on Wednesday afternoon set off a chain of events that ended with a crashed car, a foot chase through backyards, two injured officers and a loaded Glock handgun stuffed with an oversized 22-round magazine. Boston police arrested a 19-year-old Brighton man and a 16-year-old boy with a string of outstanding warrants after the pursuit wound through the Codman Square area and into the streets around Tonawanda Street.
According to the Boston Police Department, officers responded to the ShotSpotter activation near Washington Street and located a suspect vehicle that fled at high speed toward Melville Street. The department said the vehicle's license plates had been reported stolen. Backup poured in fast: SWAT, K-9 units and the Youth Violence Strike Force all responded to assist patrol officers already converging on the area, per the department's account. The Newport Dispatch reported the initial alert was logged at approximately 3:14 p.m. Wednesday, pulling in District C-11 alongside the specialized units.
Youth Violence Strike Force personnel observed the fleeing vehicle crash at the intersection of Tonawanda Street and Greenbrier Street, Boston police said. The driver was pulled from the wreck and transported to a local hospital with non-life-threatening injuries before officers arrested him. Police identified him as 19-year-old Seth Porong of Brighton, who now faces charges of receiving a stolen motor vehicle, receiving stolen property, reckless operation of a motor vehicle and operating with a suspended license. He is expected to be arraigned in Dorchester District Court.
A Chase on Foot Through Backyards
A second person fled the crashed car on foot, according to police, running through backyards along Tonawanda Street before jumping a fence into the yard at 111 Tonawanda Street. Boston K-9 units searched the flight path as officers gave chase, and the suspect was ultimately arrested. Two officers were hurt during the arrest and transported to local hospitals with what police described as non-life-threatening, minor injuries.
Police said the suspect taken into custody was a 16-year-old boy who was already the subject of multiple outstanding arrest warrants, including warrants for assault and battery, assault and battery with a dangerous weapon, larceny over $1,200, and firearm offenses. He now faces additional charges of unlawful possession of a firearm, possession of a large-capacity feeding device and trespass, and he is expected to be arraigned in Boston Juvenile Court.
An Extended Magazine on a Subcompact Glock
Officers recovered a firearm from the backyard of 119 Tonawanda Street, which police identified as a Glock 27, along with ballistic evidence located in front of Roslin Street. The magazine loaded into the recovered handgun was capable of holding 22 rounds of ammunition. The subcompact Glock 27, chambered in .40 S&W, comes factory-equipped with a standard 9-round magazine according to Glock's own specifications, meaning the recovered magazine was an extended aftermarket device carrying more than double the pistol's designed capacity. District detectives processed the scene while the suspect vehicle was last seen in the area of Waldeck Street before the crash.
The large-capacity magazine charge is not a minor add-on. Under Massachusetts General Laws Chapter 269 Section 10(m), possession of a feeding device holding more than 10 rounds for a semi-automatic weapon carries a penalty of up to two and a half years in a house of correction or up to five years in state prison, according to a summary of the statute published by Milligan Higgins. Separately, carrying an unlicensed firearm outside one's home or business under Chapter 269 Section 10(a) carries a mandatory minimum of 18 months in jail and up to five years in state prison, per a legal explainer from Urbelis Law.
Youthful Offender Standards May Apply
Because the arrested juvenile is 16 and already faces felony firearm allegations on top of his outstanding warrants, prosecutors could pursue a Youthful Offender indictment. Under Massachusetts General Laws Chapter 119 Section 54, that process lets prosecutors try juveniles aged 14 to 17 under adult sentencing standards for felony gun crimes, according to Brad Bailey Law. Weapons charges against minors in Suffolk County otherwise fall under the jurisdiction of Boston Juvenile Court, where the teen is expected to be arraigned.
The Youth Violence Strike Force that spotted the crash and helped run down the fleeing suspect has operated since 1993, working primarily in plainclothes to target illegal street handguns, violent offenders and gang activity in high-density areas including Dorchester and Roxbury, according to a Harvard Law Review account of the unit's history. The crash site itself sits roughly half a mile north of 719 Washington Street in Dorchester's Codman Square area, property records show, underscoring how far the pursuit traveled through a densely built residential stretch before it ended.
ShotSpotter's Track Record Still Debated
Wednesday's activation is the latest example of how ShotSpotter alerts continue to trigger large, fast police responses across Dorchester, even as the technology's accuracy remains contested. An April 2024 public records study by the ACLU of Massachusetts, examining Boston police records from 2020 to 2022, found that roughly 70 percent of ShotSpotter acoustic alerts in the city resulted in officers finding no physical evidence of gunfire. Despite that criticism, Mayor Michelle Wu and Police Commissioner Michael Cox reaffirmed the city's commitment to renewing its ShotSpotter contract in mid-2024, citing its usefulness in getting officers to gunfire locations quickly.
The pattern seen Wednesday echoes past incidents along the same Dorchester corridors. Hoodline previously reported an overnight pursuit near Dorchester Avenue and Melville Avenue in August 2025 that similarly ended in a crash, a foot chase through neighborhood yards, and a gun recovery. Just days before this latest incident, Hoodline covered a separate Youth Violence Strike Force operation in Dorchester that netted a 32-round magazine and five stolen dirt bikes, part of a broader trend of high-capacity feeding devices turning up in the department's enforcement actions across the neighborhood this year.
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