— OJPAC Hudson Valley (@OJPACHV)
December 29, 2019
The suspect fled the scene by car but was later stopped and taken into custody.
The rabbi's house is next door to his shul. One of his children was among those stabbed.
"The house had many dozens of people in there," co-founder of OJPAC for the Hudson Valley region Yossi Gestetner told the New York Times.
One 65-year-old witness told the paper: "I was praying for my life. He started attacking people right away as soon as he came in the door. We didn't have time to react at all."
The motive was unclear but New York Governor Andrew Cuomo said he had tasked the state police's hate crimes task force to investigate.
He said: "Let me be clear: antisemitism and bigotry of any kind are repugnant to our values of inclusion and diversity and we have absolutely zero tolerance for such acts of hate."
Monsey, which is about 30 miles north of New York City, is home to a large strictly Orthodox community.
The attack comes three weeks after five people were killed in a shooting at a kosher supermarket in Jersey City, near New York City.
The dead included the two men suspected of carrying out the attack in what authorities now believe was an antisemitic hate crime.