‘Crooked’ NYPD cop busted for cocaine possession An NYPD officer suspected of a slew of crimes was busted for cocaine possession Monday after admitting to an informant, “I should know better — I’m a cop,” according to court papers. Disgraced Manhattan cop Johnny Diaz — a 23-year veteran of the force — was initially probed for allegedly offering to help crooks beat their raps in exchange for cash. Prosecutors said an undercover investigator was then assigned to track Diaz and posed as a drug dealer in his patrol area. Diaz, 48, arrested the informant May 23 and allegedly logged only $17,000 of the $18,000 in cash he recovered from the man, according to prosecutors. He then offered to return the dealer’s cell phone from an evidence locker and accepted a $250 bottle of Johnnie Walker Blue scotch as a thank-you gift for the favor, said ADA Emily Farber. The crooked cop then allegedly offered to tamper with the man’s pending case in order to get it tossed in exchange for $20,000. Diaz, a father of two, also later helped transport a kilo of cocaine from The Bronx to upper Manhattan for the informant June 15 in exchange for $4,000, authorities said. After moving the load, the two men partied at a lower Manhattan club, where Diaz made his damning admission, adding, “I could do life for this.”A glum-looking Diaz pleaded not guilty Monday to one count of first-degree possession of a controlled substance. Farber said more charges are anticipated and that Diaz committed other crimes during his corrupt career in law enforcement, including stealing cash from defendants and accepting bribes to throw their criminal cases. Defense lawyer Raymond Loving argued that Diaz had deep ties in the community and wasn’t a flight risk. But Justice James Burke ordered the veteran cop held without bail in protective custody. “As alleged in this case, this Officer was willing to traffic dangerous narcotics in the city he is sworn to protect for a few thousand dollars, and to steal evidence from his own precinct for a bottle of scotch,” said Manhattan DA Cyrus Vance Jr. in a statement. Diaz faces up to 40 years in prison if convicted.