Monroe College is “under cyberattack” by hackers who demanded approximately $2 million in bitcoin, police and school officials said Thursday.

The school’s computer programs were hacked around 6:45 a.m. Wednesday by a group that got in through ransomware and halted the system, cops said.

The hackers sent a message demanding that the university, which has a location on Jerome Avenue in Kingsbridge Heights, send 170 bitcoin — the equivalent of $2 million — in order to have its system restored.

The college has campuses in the Bronx, New Rochelle and St. Lucia, according to its website.

The NYPD is investigating the incident as a grand larceny committed by extortion.

“We are, in fact, under cyberattack,” said a spokesperson for the college. “A lot of our systems are being held — we do not have access at the moment.”

“We are obviously taking this very seriously … but we’ve rolled up our sleeves,” the spokesperson said, adding: “Monroe was founded in 1933, and what that means is we know how to teach the old-fashioned way.”