Belgian police seized about 6 million euros ($7.4 million) worth of cocaine at Brussels' international airport hidden in luggage belonging to Polish and South African women, a statement said on Wednesday. The two women arrived on a flight from Sao Paulo, Brazil, via Madrid on Monday with 18 kg (40 lb) of the drug, the police statement said. The couple were detained along with three people who were waiting for them at Zaventem airport in Brussels -- one Sudanese and two Dutch. The five planned to go to the Netherlands by car.