String.split method to split a string by dot and save it as arraylist

Am Fetching few lines from remote server and saving each line as an arraylist element by setting dot as a separator. Everything works fine. I just don't understand why a strange rn value gets appended to every new line.

E.g.:

I am going to School. I am feeling hungry

gets split and displayed as

I am going to School

rnI am feeling hungry

What does that rn stands for?

I am using String.split to separate. My code is below.

List<String> po= new ArrayList<String>();

separated_q = Arrays.asList(prdesc.split(Pattern.quote(".")));

for(int k=0;k<separated_q.size();k++) {
    po.add(separated_q.get(k));
}

Please help me point out where am wrong.