Colombo, April 5 : A US dollar officially fetched 300 Sri Lankan rupees on Tuesday for the first time in the island nation’s history. The selling price of the dollar at licenced commercial banks has increased to Rs 310, Sri Lankan Newswire reported. This is the first time the dollar has passed the Rs 300 mark in local banks of the island, it added. Sri Lanka is currently facing its worst ever economic crisis. VP MR