INDIANAPOLIS -- A former Indianapolis police officer was sentenced Thursday after he revealed information that allowed several drug suspects to avoid arrest.

Noble Duke, 39, was sentenced to four months of community confinement and six months of home detention. He will also be required to complete 180 hours of community service.

Duke pleaded guilty in April to unlawfully disclosing the contents of federally authorized wiretaps with the intent to obstruct or impede a criminal investigation, according to Timothy Morrison, acting U.S. attorney for Indiana's southern district.

Duke was monitoring phone conversations in one court-authorized wiretap case but was aware of another one -- a case in which officers would try to arrest 36 people on drug trafficking charges -- being conducted in the same room at the Indianapolis FBI office, Morrison's office said.

The federal government alleges that someone asked Duke to find out information about the other investigation last spring. Duke eventually told this person that certain people's phone conversations were being monitored, that an indictment was pending, and that police officers would try to arrest people on a certain day, the government alleges.

Duke was charged on March 18, not long after he resigned from the Indianapolis Metropolitan Police Department, according to a news release from the U.S. attorney.