Askero extends the acceptance period in the offer for Sigma to 10 June

This press release may not, directly or indirectly, be distributed in or to Australia, Canada, Japan, South Africa or the United States of America. The offer is not being made to persons in those countries or elsewhere where their participation requires further offer documents, filings or other measures in addition to those required by Swedish law. This is a translation of the Swedish press release. In the event of any discrepancies, the Swedish version shall prevail.• The acceptance period for the shareholders in Sigma AB (publ) (“Sigma”) is extended up to and including 10 June 2008 at 3: