A northern New Jersey man has been charged with the stabbing deaths of his mother and brother in Teaneck.

Bergen County Prosecutor John Molinelli says that 60-year-old Keith Knight stabbed his 84-year-old mother, Victoria Knight, and 52-year-old brother, Ronald Victor Knight, to death inside their Ward Plaza home.

Neighbors tell News 12 New Jersey that Keith Knight, his mother and brother lived in the home for quite some time and mostly kept to themselves.

Keith Knight was well known around town for helping with lawns and landscaping. Neighbors say he was quiet, but never did anything to raise suspicions.

Keith Knight appeared in Bergen County Court Thursday afternoon. His bail was set at $2 million.