A Queens councilman is pushing for more privacy protection in the New York City Police Department's Stop and Frisk program.

Councilman Peter Vallone says it's wrong for police to maintain a database of people who were stopped and questioned, but not arrested or issued a summons.

Vallone, who heads the City Council's Public Safety Committee, has been exchanging letters with Police Commissioner Ray Kelly for the past few months.

Vallone says he supports the overall Stop and Frisk policy, but he thinks it's unfair for those who are stopped and let go to find their names held in a database for years. The councilman says the names should be systematically deleted after a certain period of time.

According to the New York Daily News, Kelly has no intention of removing the more than 500,000 names from the database -- and that a lawsuit required the NYPD to maintain the database.

The topic crept into the mayoral debate last week. Democratic candidate William Thompson said 90 percent of those stopped are African American or Latino. While both he and Mayor Michael Bloomberg support the Stop and Frisk program, Thompson says it's overused.