Cumberland County Sheriff Kevin Joyce asked the state ethics commission Tuesday to investigate the activities of a political action committee that has paid for radio ads and campaign mailings attacking Joyce in his run for re-election.

In a letter to the commission, Joyce’s campaign asked for an inquiry into whether Citizens for a Safe Cumberland County and Joyce’s opponent in next week’s Democratic primary, Michael Edes, have coordinated their campaigns, in violation of state election law.

Filings with the Commission on Governmental Ethics and Election Practices show that the PAC received all of its funding, totalling nearly $100,000, from a company in Florida in which Michael Liberty, a longtime friend of Edes, is listed as an officer.

“We seek to determine if (Citizens for a Safe Cumberland County) and the Campaign for Edes for Sheriff did in fact coordinated (sic) their respective campaigns,” says the letter to the commission from Joyce’s campaign manager, Dennis Hersom.

The race for sheriff has been heated. Edes, a retired state trooper, has a chance to unseat Joyce in the Democratic primary because there will be no Republican on the ballot in November.

This story will be updated.