Authorities Reveal Alleged Motive in New Jersey Mansion Murders: Today on Inside Edition

The brother of a man who was found murdered outside his mansion has been arrested in connection to the death.

A man who is accused of killing his brother, his brother's wife and their children at their New Jersey mansion was motivated by financial issues, according to authorities.

Paul Caneiro has been charged in the deaths of his brother's family, who were found dead at their burning home in Colts Neck on Nov. 20. On Thursday, prosecutors described what they say happened that day.

More details are also emerging in the case of a Colorado father who killed his pregnant wife and their two daughters in August. Authorities revealed the internet searches made by Chris Watts and his mistress. See here for more details.

Inside Edition also spoke to an 8-year-old boy who was bitten by a nurse shark after his dad said tour organizers told him the sharks posed no danger. The little boy, Asher Jones, shared his theory on why he was attacked.

And there's more to that video of a giant steer towering over other cattle in Australia. See why the steer looked so big.

For more Inside Edition stories, tune into today's show. Check here for local listings.