How many were the polish prisoners in the USSR in the end of1939

Do somebody has any information about polish POWs in the USSR right after collapse of Poland in sep of 1939?
I/m interesting an overal figures of soldiers , officers and ynter-officers who were captured bu the Red Army in that time.

According to the British Foreign Office it was approx 240,000:

http://www.fco.gov.uk/servlet/Front?pagename=OpenMarket/Xcelerate/ShowPage&c=Page&cid=1049114110312

Well thanks Amrit, i have to add this figure are supported by the some of russian sources.
But i could not to learn how many of them were the officers?

The only breakdown I can currently find are from two wiki articles:

http://en.wikipedia.org/wiki/Katyn_massacre#_note-ipn_eng_news_high_katyn_decision
(details on numbers of POWs are in the Prelude)

and

http://en.wikipedia.org/wiki/Polish_prisoners_of_war_in_Soviet_Union_(after_1939)

I have not checked out the sources given, but they may give orginal sources for the information.