A 33-year-old mother climbed over a safety rail and intentionally went over Niagara Falls with her two children, a 9-year-old and 5-month-old, according to New York state police, who said Wednesday that search and rescue efforts were unsuccessful.

Oct. 31 (UPI) -- A 33-year-old mother and her two children are believed to have died earlier this week after going over Niagara Falls, according to New York State law enforcement, who have determined the incident "was intentional in nature."

A New York woman and two children, including an infant, died after going over Niagara Falls this week, state police said.