The unsealed indictments contained more than 1,600 criminal counts, the bulk of them misdemeanors having to do with making tickets disappear as favors for friends, relatives and others with clout. But they also outlined more serious crimes, related both to ticket-fixing and drugs, grand larceny and unrelated corruption. Four of the officers were charged with helping a man get away with assault.

Jose R. Ramos, an officer in the 40th Precinct whose suspicious behavior spawned the protracted investigation, was accused of two dozen crimes, including attempted robbery, attempted grand larceny, transporting what he thought was heroin for drug dealers and revealing the identity of a confidential informant.

The case, troubling to many New Yorkers because of its implication that the police officers believed they deserved special treatment, is expected to have long tentacles. Scores of other officers accused of fixing tickets could face departmental charges. Some officers have already retired. Moreover, the indictments may jeopardize thousands of cases in which implicated officers are important witnesses and may be seen as untrustworthy by Bronx juries.

The contentious scene in the Bronx concluded a week of deep embarrassment for the New York Police Department and Commissioner Raymond W. Kelly, who at a news conference acknowledged the difficulty of having “to announce for the second time this week that police officers have been arrested for misconduct.”

Federal agents earlier in the week arrested eight current and former officers on accusations that they had brought illegal firearms, slot machines and black-market cigarettes into New York City. Recently, other officers have been charged in federal court with making false arrests, and there was testimony in a trial in Brooklyn that narcotics detectives planted drugs on innocent civilians.