Sad to know about Andres, your brother was passing through the period of Rahu and Ketu. Rahu mahadasha was going on and Ketu antardasaha from March 2011. Rahu and Ketu are posited in the 12th house and 6th house respectively in his natal chart. 12th house is for hospitalization, it is also the house of the end of life journey. As the first house is the beginning, the 12th house indicates the end. That is why it is called the house of Moksha. Where the soul leaves the body and try to assimilate with the Supreme. Rahu in the 12th house also indicates unnatural and accidental death. Having said that you should donate something in his memory every Saturdays from your hands in a holy place or to a needy person. This will bring peace to his soul.