“His violent attack across state lines demonstrates an escalation of dangerous behavior, placing the public in serious danger,” Plymouth Assistant District Attorney Alex Zane wrote in the court filings. “The brutality, arbitrariness and disturbing nature of his actions highlight the immediate and unpredictable threat he poses to the community, which justifies his continued detention.”

Ravizza, a self-employed social media influencer with ties to Martha’s Vineyard but living in Agawam, is also under investigation for his alleged involvement in the killing of a 70-year-old man in Deep River, Conn., earlier the same day. , authorities there said.

A 16-page summary of Ravizza’s case, filed in Plymouth Superior Court on September 11, outlines Ravizza’s alleged “brutal and random” path on May 25, beginning with the gruesome murder of Ravizza’s roommate, Bruce Feldman, and two dogs in Connecticut .

According to the summary, surveillance cameras on the property captured the killing.

When Connecticut State Police went to a house Ravizza had rented, the door was ajar. They followed a trail of blood from the living room to the back deck, where they found a black poodle that had been stabbed and wrapped in a blanket, court records said.

Another bloody trail led the soldiers from the kitchen to the basement, where they found a hacksaw covered in fur and blood. They followed the drag marks outside to a wooded area, where they found a nearly decapitated white poodle. There had also been multiple stabbings, court papers said.

Feldman, the roommate, was found outside, face down in a nearby embankment. An autopsy showed he had been stabbed multiple times in the face, chest and back, the summary said.

According to the filing, Ravizza allegedly assaulted Feldman twice.

“Both times, the victim, who crawled up the embankment, pleaded for his life and begged the suspect to take him to the emergency room,” the summary said.

From Connecticut, Ravizza allegedly drove to a movie theater in Braintree and stabbed four girls between the ages of 9 and 17. Ravizza has pleaded not guilty in Norfolk Superior Court to charges stemming from that incident.

He is due back to the courthouse on Monday for a dangerousness hearing, records show.

According to court documents, Ravizza did not pay for a ticket when he went to a screening of the movie “If.” During the 17 seconds he was in the darkened theater, Ravizza allegedly walked past a row of seats and stabbed the four girls, including the 9-year-old twin sisters, who were sitting in the row in front of him.

Three of the girls were stabbed in the back and one of the twins was cut on her forearm, requiring 32 stitches, court records show.

When Ravizza fled, he would “laugh like the Joker,” one of the girls told police.

About an hour later, Ravizza was reportedly at a McDonald’s restaurant on the Route 3 rest area in Plymouth.

Several 911 calls brought police to the eatery, where officers found two employees suffering from lacerations from a knife and were told their attacker had fled.

The victims, a 21-year-old woman and a 28-year-old man, were taken to separate hospitals with injuries that were not life-threatening.

Surveillance footage showed a person appearing to be Ravizza in a black Porsche near the drive-through window, where he allegedly reached in and stabbed a male employee with a large knife. Ravizza allegedly drove away, returned on foot, went behind the counter and stabbed a female employee, prosecutors said.

Ravizza is said to have left in his Porsche. Less than half an hour later he was arrested after the Porsche crashed in Sandwich.

In Connecticut, authorities have described Ravizza as a suspect in Feldman’s murder.

Connecticut State Police have said Ravizza cannot be charged there while he was in custody in Massachusetts. Meanwhile, authorities in both states are working together, state police said.

Tonya Alanez can be reached at [email protected]. Follow her @talanez.