NESCONSET, NY – Just when the community thought the nightmare was over, the house where 18-year-old Austin Lynch allegedly executed his ex-girlfriend Emily Finn with a shotgun has literally gone up in flames—or at least blown apart.

On Wednesday afternoon, December 4, 2025, neighbors on Shenandoah Boulevard North heard a massive explosion powerful enough to rattle windows blocks away. Suffolk County Police, arson investigators, and the ATF bomb squad rushed to the taped-off property—still an active crime scene from the November 26 murder-suicide attempt.

Eyewitnesses are stunned: approximately 30 minutes before the blast, they clearly saw an older woman, identified by multiple residents as Austin Lynch’s mother, enter the sealed house. “She looked nervous, kept looking over her shoulder,” one neighbor told reporters. “We all thought the place was locked down by police—how did she even get inside?”

The timing couldn’t be more chilling. That same morning, Lynch—face still bandaged from his failed suicide attempt—appeared in court and pleaded not guilty to second-degree murder in the point-blank shotgun killing of 18-year-old SUNY Oneonta freshman Emily Finn. Prosecutors revealed Lynch loaded exactly two shells: one for Emily, one for himself.

Now investigators are scrambling to determine if the explosion was:

An attempt to destroy evidence
A grief-stricken act by a devastated mother
Deliberate arson or a booby-trap gone wrong
Something even more sinister

No injuries were reported, but the blast shattered windows of nearby homes and left the once-quiet street looking like a war zone. Sources say the ATF is testing for accelerants and possible improvised explosive devices.

Emily’s heartbroken family, who packed the courtroom wearing pink ribbons in her memory, are reeling from this latest twist. “First he took her life, now they’re blowing up the last place she was alive?” one relative said outside the house.

Austin Lynch remains held without bail. His mother has not been charged, and police have only confirmed they are “speaking to persons of interest.”

The quiet Long Island block is on edge tonight: Was this a desperate cover-up, a mother’s final breakdown, or a warning that the violence isn’t over?

More as this shocking story explodes…