The nondescript shop, which has been operating for the last three months in a busy corner in Bandar Baru Bangi town in Selangor state, seems to be a souvenir hub for militants and their supporters who would go there to equip themselves with the latest IS paraphernalia, the Star Online reported.
Some of the T-shirts, priced around Rs 1,044, were emblazoned with phrases such as "Mujahideen cyberspace" and "We declare war against the Zionists", the paper said.
Justifying the high prices, the storekeeper, who claimed to be from Sabah, said the items were made and imported from Indonesia.
The shopkeeper, who is in 20s, said the shop has not been funded by any organisation and that it's a family business.
He claimed that the store, which also sells other ordinary Muslim apparel, was the first of its kind in Malaysia.