NIAGARA FALLS, NY –

Warning: This story may contain elements of suicide and may be disturbing to the reader. At the end of the article you will find a list of resources for anyone experiencing a crisis.

A 33-year-old mother climbed over a safety railing and intentionally threw herself over Niagara Falls with her two children, a 9-year-old and a 5-month-old, New York State Police said search and rescue efforts were unsuccessful .

Authorities responded to the park around 9 p.m. Monday and discovered the family had flown over the railing on Luna Island, a small island between American Falls and Bridal Veil Falls, which along with Horseshoe Falls make up the popular tourist attraction .

“The investigation has determined that this incident was intentional in nature, however the circumstances remain under investigation,” a state police news release said.

The authorities are using unmanned aircraft and underwater units in the investigation.

If you or someone you know is in crisis, here are some resources available.

Canada Suicide Prevention Hotline (1-833-456-4566)

Center for Addiction and Mental Health (1 800 463-2338)

Crisis Services Canada (1-833-456-4566 or SMS 45645)

Child Support Line (1-800-668-6868)

If you need immediate help, call 911 or go to the nearest hospital.