BOSTON — A Boston man told fellow riders on an MBTA Commuter Rail train that he wanted to build bombs targeting "extremist groups, terrorist organizations, and homeless individuals" — and cited the January 6, 2021 Capitol attack as his inspiration — before alert commuters flagged him to Transit Police, according to the Suffolk County District Attorney's office.

Judge James Coffey set bail at $10,000 and ordered Cautillo to stay away from all MBTA transit and dangerous weapons pending a July 28 pre-trial hearing.

MBTA Transit Police were called to a Commuter Rail train at North Station just after 10:28 p.m. on June 27, prosecutors said. A witness had approached transit officers to report that a passenger — later identified as Cautillo — was making statements about wanting to build explosive devices to attack extremist groups, terrorist organizations, and homeless people.

The witness told police Cautillo cited the January 6, 2021 attack on the U.S. Capitol as his model.

Officers boarded the train and found Cautillo with an electric scooter carrying an attached bag, and a disconnected lithium battery. Nearby: an electric towel warmer with wires protruding from it.

Fearing an improvised explosive device, Transit Police cleared the train and called in a Hazardous Device Technician and an explosive-detection K-9. An X-ray of the towel warmer revealed what appeared to be a power source, fusing, an explosive charge, and a switch, according to the DA. Inside, technicians found a lithium battery duct-taped to power tool batteries, a bottle of water, a cell phone, a power adapter — and a bottle of BOOM Margarita brand wine.

The bag attached to the scooter contained commercial fireworks and additional electrical components. Several of the fireworks detonated as the bomb squad worked to neutralize the device, prosecutors said.

No one was injured.

"This man had the materials to make a possibly dangerous device but thanks to some alert commuters and quick follow-up work by transit police he didn't get the chance to move forward with anything harmful to the public," Hayden said in the release.

Cautillo is due back in Boston Municipal Court on July 28.