Vienna – Klemens Haselsteiner, the CEO of the Austrian construction group Strabag SE, has died completely unexpectedly at the age of 44. The construction company announced this on Friday evening. The other board members will temporarily take over the agendas for which Klemens Haselsteiner is responsible. According to a company spokeswoman, Haselsteiner died of natural causes; further details were not provided for the time being.