NEW : Dubai police chief `` 100 percent '' said the attack was a terrorist act. Israel says only media reports link it to killing and there 's no reason to blame Mossad . Israel has a stated policy on security matters of neither confirming or denying involvement . Leading Hamas figure found dead in his Dubai hotel on January 20 . Toxicology report found significant amounts of a drug used to relax muscles .
NEW : Dubai police chief `` 100 percent '' said the attack was a terrorist act. Israel says only media reports link it to killing and there 's no reason to blame Mossad . Leading Hamas figure found dead in his Dubai hotel on January 20 . Toxicology report found significant amounts of a drug used to relax muscles .