Authorities are investigating whether Grafton Thomas, the man charged in a machete attack on Hanukkah celebrants in Monsey, is tied to a recent stabbing near a village synagogue, a law-enforcement official told The Post on Sunday.

Details of the incident under investigation were unclear, but a 30-year man was beaten and repeatedly knifed while walking to the Mosdos Meharam Brisk Tashnad religious center in Monsey around 5:30 a.m. on Nov. 20, the Journal News reported at the time.

The victim, a father of four, was so badly brutalized that cops were initially told he’d apparently been hit by a car, officials said.

Ramapo Police Chief Brad Weidel told reporters that the man was “approached from behind by one or more individuals” and stabbed with an unidentified weapon that wasn’t immediately recovered.

The FBI joined that investigation and authorities were working to enhance low-quality surveillance video shot from afar, the Journal News reported earlier this month.