I am trying to delete something from my array but I getting exception

unrecognised selector
at delete 

my code:

```
NSMutableArray* tempNewsArray = [[NSMutableArray alloc]init];
tempNewsArray = [[defaults objectForKey:@"NewsArray"]mutableCopy];
for(int i = 0;i< [tempNewsArray count]-1;i++)
{
if( (monthIntofNew - month <= 10 && monthIntofNew - month !=0) || ( monthIntofNew - month <= -2))
    {
        [tempNewsArray delete:[tempNewsArray objectAtIndex:i]];//exception occurs here.
        //deleted
    }
}

```

I guess I am missing something, any help please?