Looks like somebody dropped the dime on him.

An NYPD detective who investigated tips as part of the department’s Crime Stoppers Unit was a crook himself, scheming with a buddy to commit bank fraud to the tune of more than $1.5 million, authorities said Tuesday.

Detective Michael Bonanno, 44, of Staten Island would use swiped bank-account numbers for wire transfers and forged checks to pay off his mortgage and credit-card debt, the Manhattan US Attorney’s Office said.

“Plain and simple, Michael Bonanno allegedly used other people’s money to pay off his debts while simultaneously serving as a police officer, charged with investigating criminal wrongdoing,’’ said FBI Assistant Director William F. Sweeney Jr. in a statement.

“We don’t allow the general public to get away with these types of crimes, and we won’t allow members of the law enforcement community to get away with them either.”

Bonanno’s alleged accomplice, longtime pal Domenic Aiello, posed as his dead father at various times while helping to make bank transfers for his rogue NYPD pal, court papers say.

Bonanno, who joined the force in 2001, was arrested Tuesday morning.

He earns $136,496 a year, according to online records. His home was bought in 2013 for $630,000, according to the real-estate Web site Zillow.