Fast Retailing Co., Japan's leading casual wear chain operator, will open a Uniqlo brand shop on Sumatra Island, its first outlet outside Indonesia's most populous main island of Java.

The shop will open Friday at the Sun Plaza shopping mall in Medan, in the northern part of the island, as part of the company's business expansion plan in Southeast Asia's largest economy, said Michiaki Tanaka, president of local sales subsidiary PT. Fast Retailing Indonesia during an interview last week.

The opening on Sumatra, the country's second most populous island, will be followed by another outlet outside Java, in Makassar on Sulawesi Island, in May, according to Tanaka.