Why is this line causing leaks?

The following is causing leaks (identified via the Leaks instrume开发者_JAVA技巧nt):

field = (char *) sqlite3_column_text(statement, 2); 
NSString *column3 = [[[NSString alloc] initWithUTF8String:field]]; (this line here) 
rowDefinitionA = column3;
[column3 release];

Is there anything wrong with that line specifically?

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You're actually over-releasing column3. Either lose the autorelease or [column3 release].