Fung made the announcement in a hastily-arranged press conference Thursday night at City Hall.
He said he made the call to O'Donnell in light of more allegations in the form of two new letters from citizens, among other concerns.
Fung added that he will seek to have the overnight parking tickets in question rescinded and emphasized that if the allegations are true, people will be held responsible.
No details about the investigation will be released. Fung cited the Police Officer's Bill of Rights.
With the state police launching its own investigation, there is no longer a need for an outside investigation, Fung said.
For complete coverage of the issue, see:
After voting against a new police contract, Councilmen Steve Stycos and Paul Archetto say their wards were targeted by a rash of tickets in retaliation.
Cranston Mayor Allan W. Fung has responded to allegations of abuse of power at the Cranston Police Department over a flurry of parking tickets that two city councilmen say were issued in retribution against their votes.
allegations of improper use of police authority," according to a release.
This story will be updated.