Mohamed Ouzzine told The Associated Press by telephone from London on Thursday that he was meeting later in the day with Moroccan athletes. He said that "we are going to examine all the files and we'll see according to each case."
Ouzzine said athletes must be held accountable for their actions.
On Wednesday the IAAF suspended Moroccan 1,500-meter runner Mariem Alaoui Selsouli from the London Olympics after she tested positive for a diuretic. She waved her right to the 'B' sample test.
Marathon runner Abderrahim Goumri was among six who were caught in biological passport tests.