NYPD Commissioner Dermot Shea praised two cops for their “keen eye [and] quick response” in collaring Rockland County stabbing suspect Grafton Thomas — who was allegedly covered in blood while driving through Harlem.

The policing duo — NYPD officers David Radziwon and Russell Mattera, who are both assigned to the 32nd Precinct, spotted the suspect’s car around midnight and pulled him over near W.144th Street and Adam Clayton Powell Boulevard, according to cops.

“Last night, a keen eye & quick response by @NYPD32Pct cops led to the apprehension of a suspect wanted in connection with the horrific attack at a Hanukkah celebration in Monsey,” Shea wrote in a tweet Sunday morning with a photo of the two officers.

New York City Councilman Chaim Deutsch said in a retweet that Thomas was covered in blood when the two cops pulled him over in Harlem.

Thomas, 37, who was identified Sunday morning, allegedly attacked a group of Orthodox Jews during a crowded Hanukkah celebration Saturday night in Monsey — a New York hamlet home to a large population of Orthodox Jews.

Five people were stabbed, two of whom remained critical Sunday.

Gov. Andrew Cuomo has called the incident “act of domestic terrorism.”