A triple homicide and an attempted home invasion within a half mile of each other has one of the country's wealthiest communities on edge.

Three elderly people, including two who had just celebrated their 50th wedding anniversary, were found stabbed and beaten to death in a Newton, Massachusetts, home Sunday morning, authorities said. 

The victims' names have not been released, but Middlesex District Attorney Marian Ryan said there were signs of forced entry, and it appears, as of Monday morning, to be a random act of violence

There was a second incident – a reported attempted break-in – the same morning about a half mile away from the murder scene, according to police, but it is unknown if the two crimes are connected. 

ANA WALSHE MURDER: AUTHORITIES RECEIVED MYSTERIOUS RANSOM NOTE DAYS AFTER EXEC WENT MISSING

Police officers gather outside of the home where a triple homicide occurred in Newton, Massachusetts

Police officers gather outside the home where a triple homicide occurred – killing a married couple and the wife’s mother – in Newton, Massachusetts on Monday, June 26, 2023. Police urged community members to stay vigilant while the search for the attacker continues.  (David McGlynn for Fox News Digital)

Ryan said she could not remember any other triple murders in the city's history during Sunday's press conference and urged residents in and around Newton to "remain vigilant, check your door and window locks, and report any suspicious activity."

"As you can imagine, this would be tragic on any day, to have family gathered for this kind of a celebration makes it particularly tragic," Ryan said during Sunday's press conference.

Police officers gather outside of the home where a triple homicide occurred in Newton, Massachusetts

Police officers gather outside the home where a triple homicide occurred – killing a married couple and the wife’s mother – in Newton, Massachusetts on Monday, June 26, 2023. Police urged community members to stay vigilant while the search for the attacker continues.  (David McGlynn for Fox News Digital)

TITAN SUBMERSIBLE RECOVERY EFFORTS CONTINUE WITH HELP OF REMOTELY OPERATED VEHICLE 

Newton Police Chief John F. Carmichael Jr. said, "We are very concerned with such a violent crime taking place in our city," and the suspect or suspects remain on the loose. 

Both the chief and district attorney said to expect a large law enforcement presence in the area and asked neighbors and residents of the Nonantum and Newtonville communities to check any video from their homes and call police if they see anything unusual that the cameras may have captured.

Newton, Massachusetts press triple homicide press conference

Newton Police Chief John F. Carmichael Jr. said he's "very concerned" during June 26, 2023, press conference about a triple homicide in Newton, Massachusetts. (Middlesex District Attorney's Office)

The elderly couple – reportedly in their 70s – lived in the same Broadway Street home as one of the victim's mothers, who was in her 90s, and were expected to be in church Sunday, but they never showed. 

A "person known to the couple" found their bodies and called police at 10:14 a.m., authorities said.  

Police officers gather outside of the home where a triple homicide occurred in Newton, Massachusetts

Police officers gather outside the home where a triple homicide occurred – killing a married couple and the wife’s mother – in Newton, Massachusetts on Monday, June 26, 2023. Police urged community members to stay vigilant while the search for the attacker continues.  (David McGlynn for Fox News Digital)

BOSTON LAWMAKER WANTS ANSWERS AFTER APARTMENT DEATH INVESTIGATION UNCOVERS CHILDREN, DRUGS, SEX TOYS: REPORT

However, it is unknown when the actual murders took place, according to Ryan, who said it was part of the investigation. 

The attempted home invasion nearby took place on Brookside Avenue before the triple homicide was reported, according to authorities. 

WATCH SUNDAY NIGHT'S PRESS CONFERENCE

There was a sense of urgency from the district attorney and police chief during the late night press conference, where they stressed calling Newton police right away about anything suspicious, at 617-796-2123. 

Newton was listed as the 36th wealthiest community in the United States, according to the Census Bureau. 

CLICK HERE TO GET THE FOX NEWS APP

Newton, Massachusetts, is one place where the median household income is more than double the national figure, 24/7 Wall St reported.  

The typical household earns $164,607 a year, the 36th highest among all cities with sufficient data and 138.5% more than the national median, according to the report.