Police in Vietnam's Ho Chi Minh City on Friday issued a prosecution order for an American man of Vietnamese descent for his alleged involvement in a protest over government plans for economic zones last week, state media reported.

William Anh Nguyen, born in 1985, was one of thousands of people who protested on Sunday against a draft law to develop economic zones under which land leases of up to 99 years will be offered to investors.

Protesters fear the leases may be snapped up by investors from powerful neighbor China, with which Vietnam has a rocky history.