Warning labels will soon be required on all domestic cigarette packages in an effort to get people to quit smoking, particularly youngsters, the health minister said.

Health Minister Adhyatma has officially informed Indonesian cigarette retailers that the warning labels reading: "Smoking can endanger health," will be required on all cigarette packages begining in April, according to media reports Saturday.The labels will not have to state the nicotine content of cigarettes as Adhyatma originally requested.

Virtually all cigarettes smoked in Indonesia are imported and U.S. brand names such as Marlboro, Kent, Salem and Camel, are believed to account for about 40 percent of the domestic cigarette market.

Half of Indonesia's population of 179 million is younger than 25, and health officials estimate 53 percent of those between 15 and 19 smoke, many of them heavily.