Charlottetown City Councillor Mitch Tweel is defending his decision to write a letter in support of convicted killer Randy Crosby on city letterhead.

Tweel is in charge of the city's police committee, and wrote the letter at the request of Crosby's lawyer. Crosby delivered the punch that killed Niall Lucock following an altercation at a Charlottetown bar, and was recently convicted of manslaughter.

Another city councillor, Danny Redmond, also wrote a letter in support of Crosby. He did not use city stationary, but did sign it as a councillor for the city.

Acting Mayor Clifford Lee believes elected councillors should not use their positions as public officials when they speak as private citizens.

"It's poor judgment. It's a really regrettable situation," says Lee of the letters from Tweel and Councillor Danny Redmond.

The letters were gathered by Crosby's lawyer before his sentencing hearing.

Tweel used City of Charlottetown letterhead, and signed his letter as chair of the police committee.

Charlottetown City Police were responsible for the investigation into the incident, and laid the charges against Crosby.

"That's something between Randy Crosby and I," Tweel says. "That's not a public matter."

But Mayor Lee says the city's lawyer says the councillor's actions are inappropriate. he says Tweel wasn't speaking on behalf of the city, the police committee, or the police department.

"It should never have been signed, using his position, or title with City of Charlottetown, we don't play a role in type of court system, nor should we be attempting to play a role," says Lee.

Clifford Lee says the city's lawyer will advise all the councillors they haven't broken any rules or laws. But that there are some issues where they can speak as private citizens, and some when they're speaking as public officials.