Paul Caneiro, [left], was charged on Thursday with the murders of his  brother Keith [right], and his family. Paul (left) is the older of the two brothers by a year but he worked for Keith seen [right with his son Jesse, when he was a baby]. Jesse now 11 was also murdered in the killing spree

The brother of a New Jersey millionaire found murdered along with his family has been arrested for their murders.
Tech company CEO Keith Caneiro, was found shot on the lawns outside his burning mansion. His wife Jennifer, 45, his 11-year-old son Jesse and daughter Sophia, 8, were found stabbed to death and badly burned in their burning home earlier this month.
Paul Caneiro, 51, was charged on Thursday with the murders of his 50-year-old brother Keith, Keith’s wife Jennifer and their children, Sophia and Jesse.
Paul Caneiro was previously arrested for setting fire to his own house.
The blaze at his home was reported seven hours before fire fighters were called to his brother’s mansion miles away in Colts Neck, New Jersey.
It remains unclear what the motive for the killings was. Prosecutors refused to share more information about the most recent charges on Thursday morning until a press conference scheduled for 11am.
Keith and his family were found dead at their home on November 20 after a landscaper reported it being on fire.

New Jersey businessman Paul Caneiro, [photo], was charged on Thursday with the murders of his brother and business partner Keith, Keith’s wife Jennifer and their children, Sophia, eight, and Jesse. 

When police arrived, they found Keith shot outside and his wife and children stabbed inside.
Their bodies were badly burned and it took investigative teams days to be able to get into the house to survey the damage.
At 5am that morning, a fire was reported at Paul’s home in Ocean Township, 12 miles away.
He was at the home with his adult daughters and wife at the time but they all made it out alive and stayed at the scene for hours afterwards to talk to police.
He left the area at around noon. Forty minutes later, the fire at Keith’s home was reported.
On November 21, Paul was charged with arson for allegedly setting fire to his own home but authorities refused to say whether he was a suspect in his brother’s death or the deaths of his family.

They described him as being a ‘big fish in a small pond’ who never quite lived up to the wealth his younger brother had amassed.
After the fire at his house, Paul and his wife Susan stood outside for around seven hours, according to his neighbors.
‘He said it must have been a gas leak, he had tears in his eyes. Susan was devastated,’ one neighbor, told NJ.com.
‘He said, “I’m in complete shock, I can’t believe this is happening to me.”
‘They were here until about noon. ‘
The brothers worked together at a technology consultancy firm which Keith founded and where Paul was the Vice President.

Jennifer and Keith Canerio [photo], were at the top of the social registry in the town of Colts Neck where they were friends with the mayor

Colts Neck, where Keith lived, is a well-to-do community about 50 miles south of New York City and is home to horse farms.
One woman, who owns a horse farm near Keith’s home, told The Asbury Park Press that Jennifer often brought the children by to feed the horses.
She said she was ‘so nice’ and ‘beautiful’.
Typical homes in Colts Neck are valued at about $750,000.
According to records obtained by NJ.com, Jennifer and Keith paid off their $1.8million mortgage two years ago.