FBI arrests two after explosion inside Harvard Medical School

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Summary

Explosion incident

According to the FBI, an explosion occurred early Saturday morning at Harvard Medical School's Goldenson Building, which houses labs and offices for the neurobiology program.

Suspects identified

The FBI identified and arrested two suspects, Logan David Patterson, 18, and Dominick Frank Cardoza, 20, both from Massachusetts.

Investigation and evidence

Investigators reported that the suspects were allegedly seen on footage walking toward the school and said the suspects lit a Roman candle outside before placing a cherry bomb inside a locker.

The FBI announced it has made two arrests after an explosion at Harvard Medical School. Officials said the FBI’s Boston Field Office made the arrests with the help of law enforcement at the university.

The explosion happened early Saturday morning, rocking the school but injuring no one. First responders said they saw two masked men leaving the area following the explosion.

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Who are the suspects?

The FBI identified the two suspects as Logan David Patterson, 18, and Dominick Frank Cardoza, 20, both from Massachusetts. Prosecutors charged the two with conspiracy to damage by means of fire or an explosive.

Authorities arrested both men Thursday morning. The FBI said the two will be arraigned in federal court later in the day.

According to the FBI, the two men were visiting Wentworth College for Halloween. Footage allegedly shows the two men walking toward the school. Investigators said the two chose the building because it appeared abandoned. They also said the two were able to access the building from the roof.

What are the details of the case?

The explosion happened on the fourth floor of the school’s Goldenson Building. The building contains labs and offices involved with the school’s neurobiology program.

School officials said the explosion did not cause structural damage to the building and that all labs and equipment were undamaged.

Investigators quickly deemed the explosion intentional and did not find any other explosive device during their search. They said the men lit a Roman candle outside the building before going inside and placing a cherry bomb inside a locker that exploded.

Devin Pavlou

Devin Pavlou is a digital producer at Straight Arrow.

Tags: Explosion, FBI, Harvard

Why this story matters

Authorities arrested two individuals in connection with an intentional explosion at Harvard Medical School that caused no injuries but raised security concerns in an academic setting.

Campus security

The incident highlights security vulnerabilities at educational institutions and the need for ongoing vigilance to prevent unauthorized access and potential threats.

Law enforcement response

The swift action by the FBI and university police demonstrates the importance of coordinated efforts in investigating and addressing criminal acts on campus.

Criminal charges

The suspects face federal charges following the alleged placement of explosives on campus, emphasizing legal consequences for actions that endanger public safety.

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Community reaction

Local community members played a role in identifying the suspects after police released surveillance images. Some Harvard students expressed unease following the incident, while officials emphasized the rapid response and community cooperation.

Context corner

Explosions or threats at universities, while uncommon, can generate heightened unease, especially following prior incidents or during periods of tension related to institutional controversies. Recent scrutiny and funding issues at Harvard have kept the university in the public eye.

Quote bank

Ted Docks of the FBI stated, "Setting off an explosive device inside a locker at an institution geared toward higher education is not some harmless college prank. It’s selfish, it’s short-sighted and it’s a federal crime."

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Sources

Bias comparison

Media outlets on the left emphasizes direct reporting of arrests in connection with an "apparent 'intentional'" explosion, de-emphasizing details like no injuries or structural damage.
Media outlets in the center provide the most comprehensive details, including the arrested individuals' names, specific charges, and the broader context of a "tense year" at Harvard, bridging factual gaps.
Media outlets on the right while also reporting arrests, frame the event as having "rattled one of America’s premier academic institutions," highlighting that it "fortunately caused no injuries.

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Media landscape

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138 total sources

Key points from the Left

Two Massachusetts men were arrested in connection with an explosion at Harvard Medical School, according to the FBI.
The explosion occurred on Nov. 1, 2025, at approximately 2:48 a.m. In the Goldenson Building.
Harvard police observed two individuals fleeing the scene and identified them from security footage.
Authorities indicated that the explosion was intentional, as noted by the Boston Fire Department.

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Key points from the Center

On Nov. 4, 2025, federal agents announced arrests by FBI Boston's Joint Terrorism Task Force and Harvard University Police Department of two Massachusetts men linked to the Harvard Medical School explosion.
The Boston Fire Department's Arson Unit said the explosion appeared intentional after a Harvard University Police Department officer responding to a fire alarm activation saw two people fleeing and found the blast site in a fourth-floor hallway, while the motive has not been disclosed.
No one was injured, officials reported, and medical school officials said there was no structural damage while surveillance footage showed two masked individuals fleeing the Goldenson Building.
United States Attorney for Massachusetts Leah B. Foley and Ted E. Docks scheduled to speak at a 1 p.m. Moakley Federal Courthouse briefing about the arrests of Logan David Patterson and Dominick Frank Cardoza, named in charging documents.
Officials warned the incident may raise public anxiety even as they say there is no continued threat to the university, and Boston police commissioner Michael Cox said it’s a shame that people do things like that.

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Key points from the Right

Two men from Massachusetts were arrested by the FBI's Boston office following an explosion at Harvard Medical School, which was declared intentional.
The explosion occurred on the fourth floor, affecting labs and offices in the Department of Neurobiology; no injuries were reported by the Boston Fire Department.
Surveillance images were released after a campus officer saw two individuals fleeing the building shortly after the explosion.

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