Oscar Pistorius' PR firm said the substance found in his bedroom is Testis compositum, which aids "muscle recovery", according to the Associated Press.
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The 53-year-old was killed shortly after leaving her home in Mosta, Prime Minister Joseph Muscat said.
Jordi Sanchez of the Catalan National Assembly and Jordi Cuixart of the Omnium Cultural group were jailed on Monday.
Storm Ophelia continues to bring strong winds to western parts.