Iran on Monday warned tourists and other foreigners visiting the country to obey its Islamic dress code, the ISNA news agency reported. "We have asked travel agencies to warn tourists and to explain the laws of this country," said Tehran's deputy chief of police, Hussein Sajedi-Nia. Iran has handed out more than 10,000 warnings over the past 10 days to women deemed to have infringed the dress code in the Islamic Republic, and dozens of others have been briefly detained at police stations. Sajedi-Nia indicated there was no chance of a let-up in the crackdown, a regular pre-summer measure, saying that from next week "plainclothes police will go into action." Women must cover their heads and conceal their curves in public in Iran.