CAMBRIDGE, Mass. (AP) — The U.S. Postal Service and the Cambridge postmaster are investigating after a resident said he found a stack of mail intended for registered voters in the trash.

Joe Martins says he found the postcards from the Cambridge Election Commission on Monday. The notices were sent by city officials to registered voters to assist them in locating appropriate polling places.

City spokesman Lee Gianetti tells The Boston Globe the Election Commission has spoken with Cambridge's postmaster about the dumped bundle and they are investigating.

Gianetti says the cards are part of the commission's efforts to raise awareness on voting, but don't affect anyone's ability to go out and vote.

A postal service spokesman says the election items were collected and redistributed by the Cambridge post office on Wednesday.