Two Philadelphia-Area Men Attempt to Detonate Homemade Bombs at Gracie Mansion Protest, Federal Prosecutors Charge

According to NBC New York, an improvised explosive device was thrown outside Gracie Mansion, the official residence of New York City Mayor Zohran Mamdani, during dueling protests over the weekend.

“What to Know - Improvised explosive devices were thrown outside Gracie Mansion, Mamdani's official residence, during dueling protests over the weekend”

NBC New York

The device did not detonate and Mamdani and his wife were not at the mansion.

NBC New York

The New York Times listings provided in the source set were paywall notices and could not be accessed for further reporting.

I could not confirm additional claims (such as federal prosecutors charging two Philadelphia-area men) from those paywalled entries.

Because the only substantive reporting available in the provided sources is the NBC New York account, details beyond that, including criminal charging documents or federal prosecutor statements, are not verifiable from the supplied articles.

NBC New York reports the device was confirmed as an improvised explosive device containing triacetone triperoxide (TATP).

The report describes TATP as a highly volatile homemade explosive.

New York Times

The device did not detonate when thrown outside the mansion.

The New York Times entries in the sources were paywalled and could not be opened for corroboration.

As a result, the TATP characterization and technical details are drawn solely from NBC New York in the available material.

NBC New York describes the incident as occurring amid two competing demonstrations.

“Advertisement Supported by A high school senior and a recent graduate, both from the Philadelphia suburbs, were charged by federal prosecutors with trying to support a terrorist group”

The New York Times

One was a roughly 20-person protest led by conservative influencer Jake Lang, and the other was a counterprotest that peaked at about 125 people.

NBC New York reports that two men from the counterprotest were arrested.

The New York Times snippets in the provided sources were inaccessible behind paywalls, so I could not compare or supplement NBC New York's account with additional mainstream coverage from The New York Times.

NBC New York records that Mayor Mamdani and NYPD Commissioner Jessica Tisch condemned the violence.

Tisch said the incident was being investigated as an "ISIS-inspired act of terrorism."

NBC New York

The paywalled Times entries could not be accessed in the provided sources.

As a result, no additional official statements or federal prosecutor comments were available for cross-checking in the materials supplied here.

Based on the supplied sources, the core facts available are NBC New York's account of a thrown IED containing TATP outside Gracie Mansion that did not detonate, protest sizes, two arrests, and Tisch's characterization of the probe as an "ISIS-inspired act of terrorism."

“GracieMansion Attack Advertisement Supported by Prosecutors say one of the two men who were arrested hoped the attack would be deadlier than the Boston Marathon bombing”

New York Times

The supplied New York Times items are paywall messages and do not provide substantive reporting in this dataset.

New York Times

Therefore, the specific claim in your prompt that "federal prosecutors charge two Philadelphia-area men" is not verifiable from these materials.

To produce a fully sourced summary confirming federal charges or additional legal filings, please provide the text of the Times article(s) or other accessible reporting from prosecutors or court records.