How do I programm an " int-Array MIN finder"?

My idea was this:

int index = -1
int min = arr[0];
for (int i = 0; i < arr.length; i++){
    if (arr[i] < min){
        min = arr[i];
        index = i;
    }
}

The problem is if for example there are two or more numbers with the same value... How do I have to change my code to get ALL numbers?

Thanks in advance!