Rocksource Clarifies Operations at Block CY-DWN-2001/1

Rocksource has been confronted with unofficial information, sourced from Indian websites, about the outcome of the first well in the work program on block CY-DWN-2001/1. To ensure that Rocksource is in compliance with
the Oslo Stock Exchange regulations the company is releasing the following information:

As announced earlier the partnership in block CY-DWN-2001/1, consisting of ONGC (45%), Oil India (20%), Petrobras (25%) and Rocksource (10%, subject Indian Authority approval), has completed the first of three wells in the work program on the block. The well did not encounter moveable hydrocarbons. However, the well was drilled on a location that did not test the controlled source electromagnetic (CSEM) anomaly. This means that the initial CSEM prospectivity of the block remains intact, as announced in the stock exchange notice as of October 31, 2008.