OPEC officials say no need to raise oil output target

(Adds OPEC delegates' comments, VIENNA dateline) VIENNA, June 1 (Reuters) - OPEC officials dismissed comments from Wall Street bank Morgan Stanley on Monday that the Organization of the Petroleum Exporting Countries may raise its oil output target when the producer group meets this week. The cartel's present production rate is around 31 million barrels per day (bpd), and the group forecasts the call on OPEC stocks to rise to 30.5 million bpd in the second half of the year, the bank said in a not