The governor of Guam has signed into law recreational use of marijuana on the U.S. island territory.

Gov. Lou Leon Guerrero signed the bill Thursday — a week after the Legislature narrowly passed the legislation that allows people ages 21 and older to possess up to an ounce (28 grams), the Pacific Daily News reported .

“We must regulate this illicit drug that is the most widely used drug in our society,” the governor said. “We have to take it and control it, monitor its use and effects, benefit from its medicinal efforts, allow our people to live in a safer environment.”

People won’t be able to legally purchase marijuana until regulations are developed by the new Cannabis Control Board and approved by the Legislature.

The board has up to year to form the rules. The law tasks the nine-member board with overseeing cannabis testing, manufacturing, licensing and packaging. [Read more at The Washington Post]